Three clans divided into Jin-Three clans divided into Jin refers to the event that Jin was divided up by Han, Zhao and Wei at the end of the Spring and Autumn Period in China. The three clans joined hands to destroy Zhishi, who was also the four ministers of the State of Jin.

China, the four sons of the Warring States, and Qin became more and more powerful at the end of the Warring States. In order to cope with the invasion of Qin and save the country from extinction, the nobles of various vassal States tried their best to recruit talented people. They pay tribute to the noble corporal and attract guests to expand their power, so it is popular to raise "scholars" (including bachelors, counselors, alchemists or magicians and diners). At that time, Wei Xin, Qi, Zhao and Chu Chun were all famous scholars. Because all four of them are princes and nobles (usually descendants of the monarch), people call them "four sons of the Warring States".