"Baliangwen" by Du Bi in the Northern Qi Dynasty: "I am afraid that the Chu ape will die, the trees will be delayed, the city gate will catch fire, and the fish in the pool will be harmed."

Speaking of Emperor Xiaowen of the Northern Wei Dynasty, Chi Zhongyu, the 49th generation descendant of Chi's ordinary algebra, was made the Lord of the city gate in 47 1 year. However, due to the fire in the city, the emperor blamed Chi Zhongyu for neglecting to protect the city, was dismissed, and punished his nine families. Therefore, although Chi's origin has a long history, the population development may not be much so far, perhaps one of the reasons may be affected by this incident. Over time, it was later said that the fish family in the pond suffered a collective punishment for no reason, which became a jingle of "the city gate caught fire and the fish in the pond were harmed", which was widely circulated.