Who is Mao kidding? I feel that the play is quite mysterious.

Shao Zhuang turned out to be a grave robber. When he was robbing a tomb, he got Mr. Yang Du's personal records. After research, he decided to fulfill Yang Du's last wish and remove the virus from the heads of five major companies and Li Wei's mother and son. He approached Bao Xiao and his party in order to find the leaders of five major companies and other possible virus-infected people, and designed them to take drugs (Yonghe)