The growth and transformation history of little sister Tong Xiaoxiao, from teacher-student love to sexual intercourse, from high school to having children and getting married.
In the green years, the tender smile is always accompanied by pain and sadness. Life is like a whetstone. No matter how much you express your individuality and youthfulness, it will all return to peace. There are twists and turns on the road of life, there are many storms, love and hatred, gains and losses, but in the end you will see the warm sunshine...