I have heard of this but not with this much info and if I am not mistaken the japan has the same problem maybe with Russia??I found this note interesting from the article and not hard to fanthom
In June of last year, the United States helped broker an agreement for both China's and the Philippines's ships to leave Scarborough Shoal peacefully, but China never left. They eventually blocked access to the shoal and filled in a nest of boats around it to ward off foreign fishermen.