Does "Chinese ship" really mean anything here? As far as I understand the ship official registration is a very vague concept https://en.wikipedia.org/wiki/Flag_of_convenience

and according this tweet https://x.com/erikkannike/status/1858883945607094541/history

"So - according to Russian federal port records, the Chinese ship suspected of cutting the communications cables in the Baltic Sea was captained by a Russian citizen (one Stechentsev A.E.). Interestingly Yui Peng 3 was only transferred to its current owner in China earlier this month.

The ship is carrying goods/oil from Ust-Luga in Russia, to Port Said in Egypt. Same captain also comandeered URSUS ARCTOS also carrying goods from Ust-Luga to Egypt. Mapped using @SensusQ . "

Hard to say. They will claim this is only Flag of convenience as they are caught. However China still has the opportunity to say that this is something for their law enforcement to take care of not international, and then give the captain "a slap on the wrist".

What we don't know is if China knew they were going to try this beforehand or not. Flag of Convenience is common enough that we can't be sure. This could have been planned on the high level from China and we would never know - something conspiracy theorists will run with! If China knew they would probably give the crew a sever punishment, but unofficially it is for getting caught and not doing the act. Most likely though China didn't know before hand.