In My Dad is Undercover, Shi Daliao has two sons, namely Shi Laishun and Zhang. Shi Laishun was born to Shi Dashun and his ex-wife, and Zhang was born to Shi Dashun and his ex-wife. During the War of Resistance against Japanese Aggression period, Shi Dashun separated from his ex-wife, who took Zhang and remarried to Zhang's father. It was not until Shi Laishun and Zhang met that Shi Dashun knew that he had a son.