About finding a general engineering job in Shenzhen,

It also depends on the recruitment needs of enterprises. Generally, if you are 35 years old, you should basically not consider going to an electronics factory. Electronic factories need some young people, sometimes if they are in a hurry, such as when the Spring Festival is coming, or if you have some skills, you can choose some hardware factories, printing houses, welders and so on. If you are old, I am a human resources worker. You can ask me if you don't understand anything. hope this helps