hood family environment, Gao Yang suddenly had a question, “How old were you when you started learning the piano”>>"There are also piano lessons online. When no one is around, I practice by myself..."...led with a pure and innocent face.Li Yihan's eyes softened. "I'll come back if I'm not busy with work.""You promise me, big brother Yay! That's great! I knew you loved me the most!" Li Yu-sha was as h...