At the end of the Western Jin Dynasty, the Eight Kings Rebellion led to the inward migration of the Hu people, the establishment of many Hu people's political powers, and the chaotic period of the Five Dynasties and Sixteen Kingdoms. Fu Jian, a member of the Di tribe, occupied Guanzhong and established the Former Qin Dynasty.
In 357 AD, Fu Jian killed the tyrant Fu Sheng through a coup and established himself as king. During his reign, Fu Jian made important use of the Han minister Wang Meng to carry out sinicization reforms, devalued corvee and reduced taxes, developed the economy, promoted Confucianism, promoted ethnic integration, and promoted the sinicization process of the Five Hus. Under his governance, the former Qin's national power flourished. He successively conquered Qianyan, Qiuchi, Qianliang, Daiguo, etc., And unified northern China. In 383, Fu Jian launched the Battle of Feishui with the intention of annihilating the Eastern Jin Dynasty. However, he was defeated miserably due to his pride and underestimated the enemy, which caused the former Qin Dynasty to fall into chaos and the north was divided again. In 385, Fu Jian was hanged by Yao Chang of the Later Qin Dynasty. He died at the age of 48. He had mixed successes and failures throughout his life. Although he did not complete the great cause of unification, the former Qin Dynasty under his governance brought a brief period of peace and prosperity to the people.