Ma Chao thought it was Cao Cao's false way to destroy the enemy, so he joined forces with ten generals, including Zhang Heng, Liang Xing, Hedong candidate, Ma Wan and so on, to oppose Cao Cao.
Extended data
Ma Chao (176-222) was born in Maoling, Fufeng (now Xingping, Shaanxi Province), the descendant of General Han, and the son of Ma Teng who became famous as a teenager. Cao Cao repeatedly called Ma Chao into Beijing as an official, but all of them were rejected by Ma Chao. Then Marten entered Beijing, sealed Wei Yan, and Ma Chao commanded Marten's troops.
In the 16th year of Jian 'an (2 1 1), Cao Cao ruled Guanzhong, and Ma Chao and Han Sui, the warlord of Guanzhong, joined forces to resist Cao Cao, which once posed a great threat to Cao Cao, but was defeated by Cao Cao, losing ground one after another, and then gathered forces again to capture counties in Gansu. Attached to Hanzhong Zhang Lu after failure.
When Liu Bei attacked Liu Zhang, Ma Chao surrendered to Liu Bei and surrounded Chengdu with Liu Beijun. After the war in Hanzhong, he signed a letter honoring Liu Bei as the king of Hanzhong. After the establishment of Shu Han, Ma Chao became a general in title of generals in ancient times and a township official. In the second year of Zhangwu (222), Ma Chao died of illness at the age of 47.
Baidu Encyclopedia-Ma Chao