There is a video where his mom says she fed him even though his father doesn't want him to be fed because he didn't play well that day. Also his father bet the crap out of him on a daily basis. There are some videos where both his mom and ZJK speak about his father issues.
Ma Long played well in the last match he was pretty confident. Usually ZJK doesn't give up early if you seen him all through the years. It doesn't work that way in becoming a world champion that you give up after first set. He is a good guy that he already decided that let Ma Long have it. There are no speculations about the injury, he was completely ****ed up after that match after Samsonov. After second set, he couldn't even move he can cover it to up that extent that is not even visible to the audience, that is ZJK for everyone. I felt really bad that it felt like repeat of 2016 German Open where Ma Long beat a half alive Zhang Jike. K I am exaggerating but the point is to see the reality building from past experiences.
It is totaly disappointing for Ma Long to prove against an injured ZJK. Would have great to see if both gave each other's best like 2014 World Cup.
But, one can't blame ML cos he was not the one who got injured, ****ng ZJK got injured all the time during the last 2 years. Why that happened, I don't have any idea. May be ZJK was really reckless with his health