I want to tell you, but your idea is too unrealistic. If the stamping die company has a good order, there must be a night shift, and you can't escape. If you really want to learn mold well, then put your mind right and study on the spot, and then you can switch to design for at least 3 years.
Tianjin Giant Elephant Precision Mould, Tanggu Sixth Street, 200 meters west of Huanghai Road.
As for the advertisements upstairs, you can't learn anything by spending money. It is better to learn something real to earn money in the company.