Insert the key into the power switch, make the rocker switch in neutral state, turn the key to the right, turn on the power supply, adjust the steering, and press the electric horn. Drivers should hold the steering wheel tightly, keep their eyes on the front, and don't look around to avoid distraction. Turn the rocker switch to the forward state and slowly turn the speed regulating knob to make the electric vehicle start smoothly.

Precautions for cycling:

In addition, when riding a bike, you need to hold the handle with both hands, and you need the cooperation of wrist bones and muscles. The carpal bone of normal adults consists of eight bones, namely navicular bone, crescent bone, pisiform bone, polygonal bone, polygonal bone, skull and kidney. But when the child is born, these carpals only have ossification centers, and the hornbones only appear at the age of 2-3.

Lunate bone, polygonal bone and small polygonal bone appear at 4-6 years old, navicular bone at 5-8 years old, and pisiform bone at 9- 13 years old. It is precisely because of the slow process of carpal ossification and the slow development of wrist joint muscles that riding a tricycle must exert proper force to prevent accidental injury to cells. The normal pelvis is composed of medullary bone, sacrum and coccyx, and the hip bone of animals is composed of * * *.

It has not yet formed a whole, and the pelvis has not yet been finalized. The cortical bone of pelvis is porous and plastic. The joints of pelvis are loose, so children aged 7-4 should be trained and educated early. According to experts, the ground should not be too hard when riding a bike, so as not to cause the bones that make up the hip bone to shift.

Generally speaking, it is more appropriate for a 3-year-old child to learn to ride a tricycle, which is why we have never bought a tricycle for our child. Obviously, although he envies other children having tricycles, he doesn't have the concept of "buying" and doesn't know how to ask adults for some items or toys.