Sand sculpture version: When I was a child, I wanted to be a taxi driver. My brother was very happy and gave me the second-hand taxi I wanted. Second-hand taxis carry the happiness of passengers.
Warm version: My sister rode hard in front, and my brother sat leisurely in the back. Finally, she made an aggrieved request:
"Brother, can you take me? I can't ride anymore."
"No, sister," my brother's smile was still gentle, "I can't ride a bicycle."
Purpose: Maintain traffic safety and care for longevity