A gesture of refueling
Gesture refers to a specific language system established by human beings with language center, which consists of the position and shape of palms and fingers.
In the long-term social practice, gestures have been endowed with various specific meanings and rich expressive force. Coupled with joints such as fingers, wrists, elbows and shoulders, it has a large range of activities and high flexibility.
Gestures have become the most powerful means of human expression and occupy the most important position in body language. Such as sign language used by deaf people.