Four Years Later, Brother, Please Respect Yourself

8-Year-old Gu Shiyan met 5-year-old Wen Chengxu. From then on, Gu Shiyan had a little tail; 21-year-old Gu Shiyan looked at the 18-year-old Wen Chengxu and found that his little tail had grown up; Gu Shiyan, 26, saw 23-year-old Wen Chengxu again and found that his little tail had changed.