Claim: Lü Zhengcao (4 January 1904-13 October 2009) was a Kuomintang general before joining the Communist Party of China.
Evidence: Before he joined the Communists, Lü worked as an assistant to the Kuomintang general, Zhang Xueliang. It was in this role that he was a witness to the Xi'an Incident, whereby Zhang and his fellow general, Yang Hucheng, forced the then-Chinese leader, Chiang Kai-shek to suspend the civil war with the Communists in 1936 in order and join forces against the Japanese. Lü resigned from the Kuomintang in 1937 and joined the Communist Party.