I've read the novel and found out the reason why NianNian play awfully when he was in highschool. He played the piano awfully that time because that bitch Shen Louan(idk if the spelling is wrong) purposely spilled a boiling water to NianNian's hand. There will be another misunderstanding that will make NianNian divorce that motherfucker Yansheng.
HE CALLED HIM BABY!!!!! AAAAAAAAHHHHH!!!!