the keys. A melodious sound soon filled the air.Every note seems to become a leaping sprite, leading everyone on a joyful journey.Those who hear this piano piece are as if they encounter a sea of flow..."stop," but Ou Yan's classmates are not convinced."Why didn't you guys tell her to stop when Yang Yiy from our class was hitting us just now"Don't you think you are pretty amazing"It's your drill inst...