Guan Zhong, the father of the "prostitute" industry, was the first to open a brothel. 700 girls were recruited to provide formal sexual services. Of course, there is a charge, and all the money collected will be turned over to the state treasury of Qi as military expenses.

Lu Ban, the grandfather of the "bamboo and wood masons" industry, participated in many civil construction projects with his family since childhood, gradually mastered the skills of productive labor and accumulated rich practical experience.

Yiya, the ancestor of "catering industry", was the first chef to cook with harmony. He is good at seasoning and cooking. Because he is a chef, a good cook and the first person to open a private restaurant, he is called the founder by the chefs.

Cao Cao, the originator of the "tomb robbery" industry, and a captain who touched gold originated in the Three Kingdoms period at the end of the Eastern Han Dynasty. At that time, Cao Cao, the leader of Wei Jun, set up ranks such as Faqiu corps commander and Mojin captain to make up for the lack of military pay.