Yes, I believe they are Chinese fans who hate the Japanese and they would support all players who play the Japanese.
They are obviously unashamed of their hate watching being captured live on YouTube / TV
Maybe the chinese hurricane rubbers have been surpassed by butterfly rubbers and no longer give the chinese an advantage . The rest of the world are catching up.
Still hope the JNT would drop Hina for the next big team tournament. She is basically a free rubber for Sys and Wang MY. Time to try out younger players like Odo and Nagasaki