How to use the light switch of children's toys

According to the query of Sohu official website, push the switch in parallel and the lantern will light up.

The power supply is installed on the palm of your hand, and the positive and negative wires are connected to your thumb and forefinger respectively. The lamp belt is an electric appliance, and the positive and negative electrodes are connected to both sides of the lantern handle respectively, and the touch of your fingers plays the role of switch.