Yu the Great or Yu the Engineer was a legendary king in ancient China who was famed for "the first successful state efforts at flood control," his establishment of the Xia dynasty which inaugurated dynastic rule in China, and his upright moral character. He figures prominently in the Chinese legend titled "Great Yu Controls the Waters". Yu and other "sage-kings" of ancient China were lauded for their virtues and morals by Confucius and other Chinese teachers. He is one of the few Chinese monarchs who is posthumously honored with the epithet "the Great".

The history of China spans several millennia across a wide geographical area. Each region now considered part of the Chinese world has experienced periods of unity, fracture, prosperity, and strife. Chinese civilization first emerged in the Yellow River valley, which along with the Yangtze basin constitutes the geographic core of the Chinese cultural sphere. China maintains a rich diversity of ethnic and linguistic people groups. The traditional lens for viewing Chinese history is the dynastic cycle: imperial dynasties rise and fall, and are ascribed certain achievements. Throughout pervades the narrative that Chinese civilization can be traced as an unbroken thread many thousands of years into the past, making it one of the cradles of civilization. At various times, states representative of a dominant Chinese culture have directly controlled areas stretching as far west as the Tian Shan, the Tarim Basin, and the Himalayas, as far north as the Sayan Mountains, and as far south as the delta of the Red River.