Cai Jing (February 14, 1047-1126, August 11), long characters, prime minister of the Northern Song Dynasty, calligrapher, Chiling, Cixiaoli, Xianyou County, Xinghua Army (East House, Fengting Town, Xianyou County, Putian City, Fujian Province Village) people. He has served as prime minister four times for a period of 17 years, and he can be called the first man in all times. In the third year of Xining Jinshi, he was first a local official, then a member of Zhongshushe, and he was changed to Longtu Pavilion to be established and known as Kaifeng Mansion. In the first year of Chongning (1102), he shot for the right servant and the servant under the door (right phase), and later became the official to Taishi. The battle of Xinghua Shigang; change the method of salt and tea to make the top ten money. At the end of the Northern Song Dynasty, the student Chen Dong wrote a letter, calling Cai Jing "the head of the six thieves." After Song Qinzong ascended the throne, Cai Jing was demoted to Lingnan and died in Tanzhou (Changsha, Hunan) on the way.