Teenagers grow up as comfortable as the wind.

"When a teenager grows up, he is as free as the wind" means that a child knows something about adults' thinking and is as free as the wind. "Juvenile" is a very broad concept. Eighteen years have passed and he has grown into a charming teenager.

The ancients defined "teenager" as: born as a baby; Those under one year old are called babies; When I was two or three, I was called a child; At first, the boy was 8 years old and the girl was 7 years old. The total angle is eight or nine to thirteen or fourteen years old; The age of dancing at night is 13 to 15 years old; In the year of dancing elephants, teenagers 15 to 20 years old, in the year of jasper, women 16 years old.

Extended data:

The word juvenile has appeared in many literati's poems.

Xin Qiji said in his poem: "Teenagers don't know the taste of sorrow and fall in love with the building. Fall in love with the floor I'm worried about giving new words. " Teenagers don't know what sadness is at all, so they like to go upstairs and entertain themselves. When I was a teenager, my idea was simple. Because I haven't experienced too much suffering, I always like to play and climb high. Just like others express sadness, I wrote a seemingly sad word. In fact, there is no sadness.