Da Zhi's elder brother, Liu Chengzhi, is a handsome young man who is engaged in photography in Beijing. Brother Da Zhi once participated in the filming of the Great Wall by CCTV, and was recognized as a famous Great Wall expert because of his deeper understanding of the Great Wall during the filming. Xiao Yong, the actor Zheng Jiyong, once participated in the films "Flying Over the Desperate Place" and "July 7th Incident".