Best humiliation for a demon is suicide. Though sadly doesn't apply to humans that well... Maybe we are just too stupid ,be overridden by emotion then be depressed
damn it isn't explain clearly. i speculate the reason is this : family threatened by black hooded man thus mc decided to try and leave yu ning to die by not healing her. What she said to persuade him was that she would not leave mc's clan alone and help later on, which shows the bad atmosphere...
rereading this i understood the writer intentionally begin the story lightheartedly to im attract readers, and also understood that the story is well developed. Damn...