Thirteen years old should be the first turning point in life, bid farewell to ignorant teenagers and move towards young people. Thirteen-year-old flower season, the golden age of life. From naivety to maturity, fourteen years old, from parents to independence.

13 years old means that children will soon finish primary school and enter middle school to continue their studies.

Judging from children's psychological characteristics, 13 years old means that children have ended their childhood, entered adolescence and are about to enter pre-adolescence.

Judging from the child's physiological characteristics, it means that the child is about to enter a stage of rapid growth-adolescence. In terms of teachers' feelings, pupils before the age of 13 are often more obedient to school rules and teachers' control, and have strong plasticity;