4个三中三多少组简介：Zhao Huai divided the craftsmen into different categories and assigned them to various places to start research. All the empty rooms in Ruishan Prince's Mansion were used for a while, making it more popular.
Zhao Huai divided the craftsmen into different categories and assigned them to various places to start research. All the empty rooms in Ruishan Prince's Mansion were used for a while, making it more popular.
