Foreign fishermen caught working on the Chinese-claimed exclusive economic zone, or continental shelf, without the permission of the People’s Republic of China (PRC), may face fines of up to 400,000 renminbi ($62,700).  

The Chinese Coast Guard may also deport these fishers and seize their catch and fishing gear. 

The People’s Republic of China’s self-proclaimed “jurisdictional seas” cover most of the South China Sea, but the claims are contested by its neighbours and have been dismissed by an international tribunal.
This is not the first time China has enacted a law punishing and threatening others that apply to contested waters.
Read more on: 
https://www.eurasiareview.com/28122021-china-threatens-to-fine-foreign-fishermen-in-south-china-sea-waters-it-claims/