Plawolf mentioned:
Even if the Chinese map was accurate, with the ship and crew in Korean hands, it could prove difficult for China to prove it's case, and Beijing would not risk stirring up a massive diplomatic storm over this if they were unsure if the Chinese ship was in the right or not.
If the South Koreans announced that they nabbed the ship in disputed waters like the Japanese did, than China need to make a stand or else risk setting a precedent that the Koreans could use later to support their territorial claim. But if they just slipped into disputed waters, nabbed a ship, towed in into Korean waters and then reported the location, there isn't a great deal China can do about it unless they happened to have the whole thing on tape and can prove that that's what happened.
I think your point is right, but is not the WHOLE point.
Look, when it comes to the most Chinese culture-influenced
entity (I can not admit Taiwan as a
country do I?), we know how things are NOT GOING TO solved legally or "by the book" style - because the other party read the same
"Art of Struggle" book as us did.
If Chinese govt (which have nothing to do with it before the fishermen was "abducted / arrested" {depending which side of fence you are} - it was the fishermen's own acts to go there) steps into the fray, which is "the other guy's chosen battlefield", make a fight on "whether or not the place of incident is within joint administration area, here's my proof..." - that is making a legal struggle - and that legal struggle is going to took place at Korean's court, since the men are held at Korean's hand now. - The best outcome, would be reason win over outrage and racism, and Korean court give the suspects some light terms rather than "murder", everybody is politically satisfied.
First, that's not gonna happen; and second, that's not good enough.
Chinese govt's goal is to upheld territory integrity, get the men to a lighter term is not directly serving that (but to admit S.K's "
authority" in the area). Now, as of today, we all know what's an even bigger news of the region, it's regarding a man name starting with "King" - No boday like it, but it is 100% true that everything and anything about Korea Peninsula from now on, it would be even more politically concerned.
So back to the relatively small topic now of Chinese fisherman being assused of bla bla, the seize has been made, the may-be-breach-of-sensitive-water-by-the-S.K govt has been made, the plot been set into motion, I believe, and I believe my government believes, China can not win this fight by law suit, nor to deter S.Korea's furthur breach (if any) into the joint administration area by law suit, so China would simply do any other things that would deter S.Korea and upheld territory integrity more effectively.
Such measure would be like from more Chinese maritime patrols in the area, to more effectively political negotiations with S.K. to maintain the area's (the region's) calm mood.
In a word, the dead S.K maritime police officer and the pending fishermen capitan (and other fishermen), are going to be expended by both side's political animals. Sad but efficient.