Introduction to Tuogu Hall: Baidi City Liu Bei Tuogu: Guan Yu, the sworn brother of Shu Emperor Liu Bei, was defeated in Maicheng. In order to avenge him, Liu Bei urged his troops to advance. As a result, the 700-mile military camp was burned down. He was defeated and retreated to Baidi City. . He then summoned Zhuge Liang to arrive at starry night. In Yong'an Palace, Liu Bei entrusted his son Liu Chan to Zhuge Liang.