When looking for a job in Shenzhen, you must pay attention to the black intermediary. Generally, regular intermediaries do not charge money for finding jobs. Don't be fooled by them! You'll never get a job from a black intermediary.
If there is no one you trust to help you stand firm, it is very important to be careful of your own safety at ordinary times!
In short, you must learn to protect yourself in Shenzhen. This is a very complicated society, and you must not be careless about anything.
I hope you enjoy your stay in Shenzhen.