Suggestion: Don't work in Shanghai Cheng Zheng Electromechanical Manufacturing Co., Ltd. (a wholly-owned company of Zheng Da Group). The heart is dark, and all important things are easy to say. It doesn't matter if you do it for nothing, and the salary is very low, and there are no benefits such as bonuses, let alone any development opportunities. It's not a system administrator at all. It's all human feelings. The Thais in power now are greedy moths, just like vampires.
So I suggest you don't go to work in Cheng Zheng, because it will be too late to regret it!