Right, you can’t negotiate with them. Agree to the terms or sink/confiscate their vessels. China has thousands of vessels currently extracting from the ocean globally; do we wait until they’ve exhausted global marine stocks? Doesn’t sound tenable.
https://www.bbc.com/news/world-latin-america-35815444
https://foreignpolicy.com/2020/11/30/china-beijing-fishing-a...
Edit: Force should be used against antagonistic nation states when required, otherwise words are meaningless.