20-03-30 Dear six-year-old, training wheels are for babies. Just let go already. Regards, a seven-year-old. 6岁的人，辅助轮是给小宝宝用的，就勇敢一点吧。来自，一个7岁的人。 Dear seven-year-old, no matter what anyone says, stay weird. Signed, an eight-year-ol...