Police car blare blare blare.

When Jack was six years old, his father drove him to a relative's house. Being in a hurry, my father drove very fast, far exceeding the maximum speed limit.

"Jack," dad shouted, "look back and see if there is a police car following us!"

"Yes, Dad."

Dad listened to his heart and said to Xiao Li, "Look at the warning light on that police car."

Jack looked back at the rear of the car and said, "Open, close, open, close, open, close, open, close ..."