as Chinese imma give you guys the whole story - these group of people are sort of a CCTV(National TV) crew and was waiting for an ambassador(which, unsurprisingly, has a higher official rank), and they were having fun with Brendan until that ambassador arrived and they were ready to film their so called "spring festival celebrations in UK" crap. The official was unhappy that the piano is loud and decide to let his goon(namely, that "don't touch me" guy to do the dirty work, hence this video is viral. I think all of the incidents happened bc of that host woman didn't tell the ambassador that this is a world-class level pianist and youtube otherwise this ambassador would never ask that cocky guy to shout. That's how ironic this whole situation is, and you can kinda catch a glimpse on how the system work in CN