Sign language is to measure actions with gestures and simulate images or syllables according to the changes of gestures.

It is a sign language for hearing-impaired people (deaf-mute, hereinafter referred to as hearing-impaired people) to communicate and exchange ideas with each other. It is an important auxiliary tool for spoken language and the main communication tool for hearing-impaired people.

Shi: Hold a hand with five fingers, palm up, extend outward, and open the palm. Send also has the same style of play. Palm up, waist sideways, indicating invitation.

Come on: palm down, swing from outside to inside. Walking: one hand reaches for the middle finger, the fingertips are down, and the front and back alternately move forward.

Yes: one hand with five fingers straight, fingertips up, then the thumb is still, and the other four fingers bend a few times. "Neng" and "Neng" are played in the same way. To: extend a hand horizontally, palm up, and pull slightly from outside to inside.

There are: one thumb and forefinger are straight, the thumb is still, and the forefinger is bent several times. Now: Hold out the thumb and little finger of one hand, make a six, and sit on the palm of the other hand.

Start: Hands upright, palms down, and then open the door. Then tap your index finger with one hand and tap your thumb with the other. End: one thumb and four fingers are opposite, gradually close together, and then thrown down, indicating "completion" and "good"

Dream: stretch out your thumb and little finger with one hand and rotate obliquely upward from the temple, which means "dreaming" and "dreaming". Know: one index finger stands upright, and the fingertip taps the temple twice.