When Gong Jing was stupid, Niu Shan burst into tears.

Qi Jinggong said bitterly that Niu Shan was in the early years of the Eastern Han Dynasty, (ao) divided Gansu and Gongsun Shu divided Sichuan into independent kings, colluding with each other against the imperial court. In the eighth year of Jianwu, Guangwu Emperor Liu Xiu and General Cen Peng led troops to attack Tianshui (now Gansu), and Cen Peng and Pianjianghai surrounded Xiao Wei in the west city. Gongsun Shu sent troops to rescue him, and he was stationed in Shangguan (Guangxi). Guangwu sent Gaiyan and Geng Xu to surround him and returned to the East. After returning to Kyoto, Liu Xiu wrote to Cen Peng and said, "If the two cities fall, they can lead their troops south and defeat Shu and Lu." If the people are not satisfied, there will be peace and hope for Shu. "It means don't be satisfied after pacifying Gansu, and then pacify Shu in the south. Later, the phrase "calm down and look at Shu" evolved into the idiom "calm down and look at Shu", which also means to push your luck and be insatiable. It is both a commendatory term and a derogatory term.