Gongsun Shu (Chinese: 公孫述, died 24 December 36 AD) was the founder and only emperor of Chengjia, a state that controlled China's Sichuan Basin from 25 to 36.
But Gongsun adopted a defensive military posture that kept his influence confined within Sichuan while Liu Xiu's revived Eastern Han regime secured the North China Plain.
Gongsun Shu was born into a family of officials in Youfufeng (右扶風, present day Xingping) during the Western Han dynasty; his precise year of birth is unknown.
His father, Gongsun Ren, served as an imperial clerk in the Censorate in the court of Emperor Ai of Han, and was later appointed Governor of Henan Commandery (modern Luoyang).
[1][3] In 33 Gongsun Shu sent generals Tian Rong (田戎) and Yan Cen (延岑) down the Three Gorges of the Yangtze to conquer the Nan Commandery in modern Hubei but did not advance far.