1.
Mongol invasions of Japan
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The Mongol invasions of Japan, which took place in 1274 and 1281, were major military efforts undertaken by Kublai Khan to conquer the Japanese archipelago after the submission of Goryeo to vassaldom. Ultimately a failure, the attempts are of macro-historical importance because they set a limit on Mongol expansion. The Mongol invasions are considered a precursor to modern warfare. One of the most notable innovations during the war was the use of explosive. After a series of Mongol invasions of Korea between 1231 and 1281, Goryeo signed a treaty in favor of the Mongols and became a vassal state, Kublai was declared Khagan of the Mongol Empire in 1260 and established his capital at Khanbaliq in 1264. The Mongols also made attempts to subjugate the peoples of Sakhalin—the Ainu, Orok. In 1266, Kublai Khan dispatched emissaries to Japan with a saying, Cherished by the Mandate of Heaven. The sovereigns of small countries, sharing borders with other, have for a long time been concerned to communicate with each other. Especially since my ancestor governed at heavens command, innumerable countries from afar disputed our power, Goryeo rendered thanks for my ceasefire and for restoring their land and people when I ascended the throne. Our relation is feudatory like a father and son and we think you already know this. Japan was allied with Goryeo and sometimes with China since the founding of your country, however and we are afraid that the Kingdom is yet to know this. Hence we dispatched a mission with our letter particularly expressing our wishes, enter into friendly relations with each other from now on. We think all countries belong to one family, how are we in the right, unless we comprehend this. Nobody would wish to resort to arms, Kublai essentially demanded that Japan become a vassal and send tribute under a threat of conflict. A second set of emissaries were sent in 1268, returning empty-handed like the first, after discussing the letters with his inner circle, there was much debate, but the Shikken had his mind made up, he had the emissaries sent back with no answer. The Mongols continued to send demands, some through Korean emissaries and some through Mongol ambassadors on March 7,1269, September 17,1269, September 1271, however, each time, the bearers were not permitted to land in Kyushu. The Imperial Court suggested compromise, but really had little effect in the matter, after acknowledging its importance, the Imperial Court led great prayer services, and much government business was put off to deal with this crisis. The Khan was willing to go to war as early as 1268 after having been rebuffed twice, Kublai Khan founded the Yuan dynasty in 1271
2.
Yuan dynasty
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The Yuan dynasty, officially the Great Yuan, was the empire or ruling dynasty of China established by Kublai Khan, leader of the Mongolian Borjigin clan. His realm was, by point, isolated from the other khanates and controlled most of present-day China and its surrounding areas. Some of the Mongolian Emperors of the Yuan mastered the Chinese language, while others used their native language. The Yuan dynasty is considered both a successor to the Mongol Empire and an imperial Chinese dynasty and it was the khanate ruled by the successors of Möngke Khan after the division of the Mongol Empire. In official Chinese histories, the Yuan dynasty bore the Mandate of Heaven, following the Song dynasty, the dynasty was established by Kublai Khan, yet he placed his grandfather Genghis Khan on the imperial records as the official founder of the dynasty as Taizu. In addition to Emperor of China, Kublai Khan also claimed the title of Great Khan, supreme over the other khanates, the Chagatai, the Golden Horde. As such, the Yuan was also referred to as the Empire of the Great Khan. However, while the claim of supremacy by the Yuan emperors was at times recognized by the khans, their subservience was nominal. In 1271, Kublai Khan imposed the name Great Yuan, establishing the Yuan dynasty, dà Yuán is from the clause 大哉乾元 in the Commentaries on the Classic of Changes section regarding Qián. The counterpart in Mongolian language was Dai Ön Ulus, also rendered as Ikh Yuan Üls or Yekhe Yuan Ulus, in Mongolian, Dai Ön is often used in conjunction with the Yeke Mongghul Ulus, resulting in Dai Ön Yeke Mongghul Ulus, meaning Great Mongol State. Nevertheless, both terms can refer to the khanate within the Mongol Empire directly ruled by Great Khans before the actual establishment of the Yuan dynasty by Kublai Khan in 1271. Genghis Khan united the Mongol and Turkic tribes of the steppes and he and his successors expanded the Mongol empire across Asia. Under the reign of Genghis third son, Ögedei Khan, the Mongols destroyed the weakened Jin dynasty in 1234, Ögedei offered his nephew Kublai a position in Xingzhou, Hebei. Kublai was unable to read Chinese but had several Han Chinese teachers attached to him since his early years by his mother Sorghaghtani and he sought the counsel of Chinese Buddhist and Confucian advisers. Möngke Khan succeeded Ögedeis son, Güyük, as Great Khan in 1251 and he granted his brother Kublai control over Mongol held territories in China. Kublai built schools for Confucian scholars, issued paper money, revived Chinese rituals and he adopted as his capital city Kaiping in Inner Mongolia, later renamed Shangdu. Many Han Chinese and Khitan defected to the Mongols to fight against the Jin, two Han Chinese leaders, Shi Tianze, Liu Heima, and the Khitan Xiao Zhala defected and commanded the 3 Tumens in the Mongol army. Liu Heima and Shi Tianze served Ogödei Khan, Liu Heima and Shi Tianxiang led armies against Western Xia for the Mongols
3.
Grenade
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A grenade is a small bomb typically thrown by hand. A variety of hand grenades exist, the most common being explosive grenades designed to detonate after impact or after a set amount of time, Grenadiers were originally soldiers who specialized in throwing grenades. The word grenade derives from the French word for an explosive shell. Its first use in English dates from the 1590s and it is likely derived from Old French pomegranate and influenced by Spanish granada, as the fragmenting bomb is reminiscent of the many-seeded fruit. Rudimentary incendiary grenades appeared in the Eastern Roman Empire, not long after the reign of Leo III. Byzantine soldiers learned that Greek fire, a Byzantine invention of the century, could not only be thrown by flamethrowers at the enemy. The use of Greek fire spread to Muslim armies in the Near East, in China, during the Song Dynasty, weapons known as Zhen Tian Lei were created when Chinese soldiers packed gunpowder into ceramic or metal containers. In 1044, a military book Wujing Zongyao described various gunpowder recipes in which one can find, according to Joseph Needham, the Chinese also discovered the explosive potential of packing hollowed-out cannonball shells with gunpowder. The mid-14th-century book Huolongjing, written by Jiao Yu, recorded an earlier Song-era cast iron cannon known as the flying-cloud thunderclap cannon, the manuscript stated that, The shells are made of cast iron, as large as a bowl and shaped like a ball. Inside they contain half a pound of divine fire and they are sent flying towards the enemy camp from an eruptor, and when they get there a sound like a thunder-clap is heard, and flashes of light appear. If ten of these shells are fired successfully into the enemy camp, the first cast iron bombshells and grenades did not appear in Europe until 1467. A hoard of several hundred ceramic greandes were discovered during building works in front of a bastion of the Bavarian City of Ingolstadt. Lots of the grenades obtained their original blackpowder loads and igniters, most probably the grenades were intentially dumped the moat of the bastion before the year 1723. In 1643, it is possible that Grenados were thrown amongst the Welsh at Holt Bridge during the English Civil War and these grenades were not very effective and, as a result, saw little use. Improvised grenades were used from the mid-19th century, being especially useful in trench warfare. In the American Civil War, both sides used hand grenades equipped with a plunger that detonated the device on impact, the Union relied on experimental Ketchum Grenades, which had a tail to ensure that the nose would strike the target and start the fuse. The Confederacy used spherical hand grenades that weighed about six pounds and they also used Rains and Adams grenades, which were similar to the Ketchum in appearance and mechanism. Improvised hand grenades were used to great effect by the Russian defenders of Port Arthur during the Russo-Japanese War
4.
Song dynasty
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The Song dynasty was an era of Chinese history that began in 960 and continued until 1279. It succeeded the Five Dynasties and Ten Kingdoms period, coincided with the Liao and Western Xia dynasties and it was the first government in world history to issue banknotes or true paper money nationally and the first Chinese government to establish a permanent standing navy. This dynasty also saw the first known use of gunpowder, as well as the first discernment of true north using a compass, the Song dynasty is divided into two distinct periods, Northern and Southern. During the Northern Song, the Song capital was in the city of Bianjing. The Southern Song refers to the period after the Song lost control of its half to the Jurchen Jin dynasty in the Jin–Song Wars. During this time, the Song court retreated south of the Yangtze, the Southern Song dynasty considerably bolstered its naval strength to defend its waters and land borders and to conduct maritime missions abroad. To repel the Jin, and later the Mongols, the Song developed revolutionary new military technology augmented by the use of gunpowder, in 1234, the Jin dynasty was conquered by the Mongols, who took control of northern China, maintaining uneasy relations with the Southern Song. Möngke Khan, the fourth Great Khan of the Mongol Empire and his younger brother Kublai Khan was proclaimed the new Great Khan, though his claim was only partially recognized by the Mongols in the west. In 1271, Kublai Khan was proclaimed the Emperor of China, after two decades of sporadic warfare, Kublai Khans armies conquered the Song dynasty in 1279. The Mongol invasion led to a reunification under the Yuan dynasty, the population of China doubled in size during the 10th and 11th centuries. The Northern Song census recorded a population of roughly 50 million, much like the Han and this data is found in the Standard Histories. However, it is estimated that the Northern Song had a population of some 100 million people and this dramatic increase of population fomented an economic revolution in pre-modern China. The expansion of the population, growth of cities, and the emergence of a national economy led to the withdrawal of the central government from direct involvement in economic affairs. The lower gentry assumed a role in grassroots administration and local affairs. Appointed officials in county and provincial centers relied upon the gentry for their services, sponsorship. Social life during the Song was vibrant, citizens gathered to view and trade precious artworks, the populace intermingled at public festivals and private clubs, and cities had lively entertainment quarters. The spread of literature and knowledge was enhanced by the expansion of woodblock printing. Technology, science, philosophy, mathematics, and engineering flourished over the course of the Song, although the institution of the civil service examinations had existed since the Sui dynasty, it became much more prominent in the Song period
5.
Cast iron
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Cast iron is a group of iron-carbon alloys with a carbon content greater than 2%. Its usefulness derives from its low melting temperature. Carbon ranging from 1. 8–4 wt%, and silicon 1–3 wt% are the main alloying elements of cast iron, Iron alloys with less carbon content are known as steel. While this technically makes the Fe–C–Si system ternary, the principle of cast iron solidification can be understood from the simpler binary iron–carbon phase diagram, cast iron tends to be brittle, except for malleable cast irons. It is resistant to destruction and weakening by oxidation, the earliest cast iron artefacts date to the 5th century BC, and were discovered by archaeologists in what is now Jiangsu in China. Cast iron was used in ancient China for warfare, agriculture, during the 15th century, cast iron became utilized for artillery in Burgundy, France, and in England during the Reformation. The first cast iron bridge was built during the 1770s by Abraham Darby III, cast iron is also used in the construction of buildings. Cast iron is made by re-melting pig iron, often along with quantities of iron, steel, limestone, carbon. Phosphorus and sulfur may be burnt out of the iron, but this also burns out the carbon. Depending on the application, carbon and silicon content are adjusted to the desired levels, other elements are then added to the melt before the final form is produced by casting. Cast iron is melted in a special type of blast furnace known as a cupola. After melting is complete, the molten cast iron is poured into a furnace or ladle. Cast irons properties are changed by adding various alloying elements, or alloyants, next to carbon, silicon is the most important alloyant because it forces carbon out of solution. A low percentage of silicon allows carbon to remain in solution forming iron carbide, a high percentage of silicon forces carbon out of solution forming graphite and the production of grey cast iron. Other alloying agents, manganese, chromium, molybdenum, titanium and vanadium counteracts silicon, promotes the retention of carbon, nickel and copper increase strength, and machinability, but do not change the amount of graphite formed. The carbon in the form of graphite results in an iron, reduces shrinkage, lowers strength. Sulfur, largely a contaminant when present, forms iron sulfide, the problem with sulfur is that it makes molten cast iron viscous, which causes defects. To counter the effects of sulfur, manganese is added because the two form into manganese sulfide instead of iron sulfide, the manganese sulfide is lighter than the melt so it tends to float out of the melt and into the slag
6.
Gunpowder
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Gunpowder, also known as black powder, is the earliest known chemical explosive. It is a mixture of sulfur, charcoal, and potassium nitrate, the sulfur and charcoal act as fuels, and the saltpeter is an oxidizer. Black powder firearms are in limited use today in hunting, shooting, Black powder has been replaced for most industrial uses by high explosives such as dynamite. Black powder is assigned the UN number UN0027 and has a class of 1. 1D. It has a point of approximately 427–464 °C. The specific flash point may vary based on the composition of the gunpowder. Gunpowders specific gravity is 1. 70–1.82 or 1. 92–2.08, Gunpowder is classified as a low explosive because of its relatively slow decomposition rate and consequently low brisance. Low explosives deflagrate at subsonic speeds, whereas high explosives detonate, ignition of the powder packed behind a bullet must generate enough pressure to force it from the muzzle at high speed, but not enough to rupture the gun barrel. Gunpowder thus makes a good propellant, but is suitable for shattering rock or fortifications. Gunpowder was widely used to fill artillery shells and in mining and civil engineering to blast rock until the half of the 19th century. Black powder is used as a delay element in various munitions where its slow-burning properties are valuable. The spread of gunpowder across Asia from China is widely attributed to the Mongols, the earliest record of a written formula for gunpowder appears in the 11th century Song dynasty text, Wujing Zongyao. This discovery led to the invention of fireworks and the earliest gunpowder weapons in China, in the centuries following the Chinese discovery, gunpowder weapons began appearing in the Muslim world and Europe. The technology spread from China through the Middle East or Central Asia, the earliest Western accounts of gunpowder appear in texts written by English philosopher Roger Bacon in the 13th century. The most ardent protagonists were Nathaniel Halhad, Johann Backmann, Quintin Craufurd, however, due to lack of sufficient proof, these theories have not been widely accepted. A major problem confronting the study of the history of gunpowder is ready access to sources close to the events described. The translation difficulty has led to errors or loose interpretations bordering on artistic licence, early writings potentially mentioning gunpowder are sometimes marked by a linguistic process where old words acquired new meanings. For instance, the Arabic word naft transitioned from denoting naphtha to denoting gunpowder, saltpeter was known to the Chinese by the mid-1st century AD and there is strong evidence of the use of saltpeter and sulfur in various largely medicinal combinations
7.
Samurai
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Samurai were the military nobility and officer caste of medieval and early-modern Japan. In Japanese, they are referred to as bushi or buke. In both countries the terms were nominalized to mean those who serve in close attendance to the nobility, the pronunciation in Japanese changing to saburai. According to Wilson, a reference to the word samurai appears in the Kokin Wakashū. By the end of the 12th century, samurai became almost entirely synonymous with bushi, the samurai were usually associated with a clan and their lord, and were trained as officers in military tactics and grand strategy. While the samurai numbered less than 10% of then Japans population, following the Battle of Hakusukinoe against Tang China and Silla in 663 AD, which led to a retreat from Korean affairs, Japan underwent widespread reform. One of the most important was that of the Taika Reform and this edict allowed the Japanese aristocracy to adopt the Tang dynasty political structure, bureaucracy, culture, religion, and philosophy. As part of the Taihō Code of 702 AD, and the later Yōrō Code, the population was required to regularly for census. With an understanding of how the population was distributed, Emperor Monmu introduced a law whereby 1 in 3–4 adult males were drafted into the national military and these soldiers were required to supply their own weapons, and in-return were exempted from duties and taxes. This was one of the first attempts by the Imperial government to form an organized army modeled after the Chinese system and it was called Gundan-Sei by later historians and is believed to have been short-lived. The Taihō Code classified most of the Imperial bureaucrats into 12 ranks and those of 6th rank and below were referred to as samurai and dealt with day-to-day affairs. Although these samurai were civilian public servants, the word is believed to have derived from this term. Military men, however, would not be referred to as samurai for many more centuries, Emperor Kanmu introduced the title of seii-taishōgun, or Shogun, and began to rely on the powerful regional clans to conquer the Emishi. Skilled in mounted combat and archery, these clan warriors became the Emperors preferred tool for putting down rebellions, though this is the first known use of the Shogun title, it was a temporary title, and was not imbued with political power until the 13th century. At this time, the Imperial Court officials considered them to be merely a military section under the control of the Imperial Court, ultimately, Emperor Kanmu disbanded his army. From this time, the Emperors power gradually declined, while the Emperor was still the ruler, powerful clans around Kyoto assumed positions as ministers, and their relatives bought positions as magistrates. To amass wealth and repay their debts, magistrates often imposed heavy taxes, through protective agreements and political marriages, they accumulated, or gathered, political power, eventually surpassing the traditional aristocracy. Some clans were formed by farmers who had taken up arms to protect themselves from the Imperial magistrates sent to govern their lands
8.
Pinyin
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Pinyin, or Hànyǔ Pīnyīn, is the official romanization system for Standard Chinese in mainland China, Malaysia, Singapore, and Taiwan. It is often used to teach Standard Chinese, which is written using Chinese characters. The system includes four diacritics denoting tones, Pinyin without tone marks is used to spell Chinese names and words in languages written with the Latin alphabet, and also in certain computer input methods to enter Chinese characters. The pinyin system was developed in the 1950s by many linguists, including Zhou Youguang and it was published by the Chinese government in 1958 and revised several times. The International Organization for Standardization adopted pinyin as a standard in 1982. The system was adopted as the standard in Taiwan in 2009. The word Hànyǔ means the language of the Han people. In 1605, the Jesuit missionary Matteo Ricci published Xizi Qiji in Beijing and this was the first book to use the Roman alphabet to write the Chinese language. Twenty years later, another Jesuit in China, Nicolas Trigault, neither book had much immediate impact on the way in which Chinese thought about their writing system, and the romanizations they described were intended more for Westerners than for the Chinese. One of the earliest Chinese thinkers to relate Western alphabets to Chinese was late Ming to early Qing Dynasty scholar-official, the first late Qing reformer to propose that China adopt a system of spelling was Song Shu. A student of the great scholars Yu Yue and Zhang Taiyan, Song had been to Japan and observed the effect of the kana syllabaries. This galvanized him into activity on a number of fronts, one of the most important being reform of the script, while Song did not himself actually create a system for spelling Sinitic languages, his discussion proved fertile and led to a proliferation of schemes for phonetic scripts. The Wade–Giles system was produced by Thomas Wade in 1859, and it was popular and used in English-language publications outside China until 1979. This Sin Wenz or New Writing was much more sophisticated than earlier alphabets. In 1940, several members attended a Border Region Sin Wenz Society convention. Mao Zedong and Zhu De, head of the army, both contributed their calligraphy for the masthead of the Sin Wenz Societys new journal. Outside the CCP, other prominent supporters included Sun Yat-sens son, Sun Fo, Cai Yuanpei, the countrys most prestigious educator, Tao Xingzhi, an educational reformer. Over thirty journals soon appeared written in Sin Wenz, plus large numbers of translations, biographies, some contemporary Chinese literature, and a spectrum of textbooks
9.
Fuse (explosives)
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In an explosive, pyrotechnic device, or military munition, a fuse is the part of the device that initiates function. In common usage, the fuse is used indiscriminately. The simplest form of fuse is the fuse, believed to date back to the 10th century. This simple fuse consisted of lightweight paper filled with loose gunpowder and this simple form of burning fuse can still be found today in many modern fireworks. A version of this simple fuse is called visco fuse, and consists of the burning core coated with wax or lacquer for durability, early fuses for grenades also consist of an wooden plug with an longitudinal hole filled with a slow burning gunpowder mixture inserted into the grenade. Such fuses were in use until the 18th century, the commercial and military version of a burning fuse referred to as safety fuse is a textile tube filled with combustible material and wrapped to prevent external exposure of the burning core. Safety fuses are used to initiate the detonation of explosives through the use of a blasting cap, Safety fuses are typically colored green or black or fluorescent orange to distinguish them from detonating cords such as Primacord, which are brightly colored or transparent. Fuses are found in pyrotechnics, model cannons, matchlock firearms, some improvised explosive devices, a slow match is a very slow-burning fuse consisting of a hemp or cotton rope saturated with an oxidizer such as potassium nitrate. Slow matches are used as a source of fire for manually lighting other devices, such as matchlock guns, todays punks used for lighting consumer fireworks are a type of slow match. A black match is a type of fuse consisting of cotton string coated with a slurry of black powder. This acts as a simple pass-fire, and was used to fire ancient cannons and they are used today in fireworks construction. A quick match or piped match is a type of black powder fuse that burns very quickly and they consist of black match covered with a loose paper wrap. When lit, the flame propagates quickly down the pipe from the hot gases produced by the burning powder. Quick matches are used in professional fireworks displays to pass fire nearly instantly between devices that must be separated while firing simultaneously, such as a finale rack. Devices which should fire in sequence can be branched from a single master fuse, a visco fuse has a core of black powder with one or more textile overwraps. The outer layers may be coated with wax or nitrocellulose lacquer for water resistance and these fuses are widely used in modern pyrotechnics because they burn at a uniform rate, with an easily visible external flame. Depending on their treatment, visco fuses are water resistant. A safety fuse consists of a black powder core in a tube, covered with asphaltum or other waterproofing agent
