The daughter laughed and said that her daughter is three years old and 7 months old this year, she has a fever, she didn't go to school, and she is singing alone, the content is, "Stop at the red light, go at the green light, wait for the yellow light", the daughter

The daughter laughed

My daughter is 3 years old and 7 months old this year.

fever,

didn't go to school,

Singing alone,

The content is, "stop at the red light, go at the green light, wait when you meet the yellow light",

The daughter ran over and asked her mother,

"Stop at the red light, stop at the green light, wait for the yellow light, so why is there no purple light?"

Her mother said, "I don't know why",

Daughter loves purple,

The daughter continued,

"Why don't you add a purple light for the kids?"

I suddenly felt,

It's a good idea if the traffic lights are especially purple for children and special situations.