I thought I saw it as 2-2, a draw. Did I miss or not paid attention to the 5th?
But certainly the Chinese have improved a lot since the early days of Sanshou vs MT (early to mid/late 2000's?). On the most part they used to get beat lopsidedly, with many of their fighters getting t/ko'd embarrassingly. But now they are on par(?) or almost on par with the Thais and others in KB.
I like watching that Zhang Kayin guy fight. As far as I know, through searching on google, he hasn't lost to a Thai yet and if anything has defeated and KO'd several of their top fighters, like Lamsongkram Chuwathanna. He's a smart fighter.
People will have to accept, like I did, that the Chinese are here to stay and will probably only get better.