because of the disability of the waist, Zhang Fengzheng is not a family, a adoptive son is College in the field. Lao Zhang also wants to find another man to inherit his own skill, but because all the tin products are made by hand, there will be one thousand kinds of one thousand pots. Now, Zhang Fengzheng, who is studying the tin making system with Zhang Jianjun, is the native of the village. He also studied with Lao Zhang for the longest time.