Jizi, Qizi, or Kizi, called in Korean Kija, was a semi-legendary Chinese sage who is said to have ruled Kija Chosŏn in the 11th century BCE. Early Chinese documents like the Book of Documents and the
A sculpture depicting a modern interpretation of Jizi in Perak, Malaysia
Sima Qian's Records of the Grand Historian (Shiji; ca 100 BCE) was one of the earliest works to claim that Jizi was enfeoffed by King Wu of Zhou as ruler of Chaoxian (= Chosŏn).
Sin Ch'aeho (1880–1936) was the first historian to question Kija's role in ancient Korea according to his New Reading of History (1908).
Ryū Imanishi (1875–1932), author of the Kishichōsen Densetsu Kō who also questioned the existence of Kija Chosŏn.
The Shang dynasty, also known as the Yin dynasty, was a Chinese royal dynasty that ruled in the Yellow River valley during the 2nd millennium BC, traditionally succeeding the Xia dynasty and followed
Shang nephrite statuette depicting a standing dignitary, dating between the 12th and 11th centuries BC, housed at the Arthur M. Sackler Museum at Harvard University
Jade deer dating to the Shang dynasty, in the collection of the Shanghai Museum
Shang jade human figure, tomb of Fu Hao (died c. 1200 BC). Probably derived from a design of the Seima-Turbino culture.
A pit at Yinxu containing oracle bones ceremonially buried after divination