Well, the moral of the story is that you can't reasonably out punch Gaolang. The Fang discovered that and so did Medel.
In any case, the faces Gaolang makes when he's being punched/kicked are hilarious. Other fighters tend to grit through the pain when blocking, but his face is just AAAAAAAAAAAAAAAAH. I thought that against the Fang he was like that because he was desperate and knew the Fang's reputation for finishing off his opponents, but it really just seems to be how he reacts to pain in general. And you know, I'm definitely not saying his reaction is unreasonable when considering the blows he's taking. I just feel he's portrayed a bit more dramatically than his peers.