Wanyi children's products company tells you how to pump up children's bicycles.

1. First of all, we saw that the tires had an air inlet with a black cap on it. We needed to screw it off.

2. Then take out the supporting portable pump, the current pump is relatively small, for the convenience of carrying.

We aim the end of the pump at the valve core of the tire and put it in.

4. And then you'll hear the pop, pop, pop, pop, pop, pop, pop, pop, pop, pop, pop, pop.

5. We also need to step on the metal ring at the bottom of the pump to prevent the pump from moving while pumping.

6. Then there is the pump, which you can give your child a try. It may take a little bit of hard work, and you need to pump back and forth.

7 must remember, at the same time when you pinch the tire is full, if it feels hard, it is full of air.