Palm up, waist sideways, indicating invitation.
Sign language gestures are affirmative:
Yes: eat with one hand, cooperate with the middle finger and move a little.
Yes: the finger type of the letter "D".
Sign them: one index finger points to the third party next to them.
Sign language, also called sign language, is produced because of the need of deaf people to communicate. As the language of the deaf, it is gradually accepted by people.
Because our country has a vast territory and a large population, just like Chinese has local dialects, there are also various local sign languages, and of course, sign languages are different from place to place. At the end of 1950s, China Deaf-mute Welfare Association revised a set of Sketches of Deaf-mute General Sign Language (four series), which was the beginning of the standardization of deaf sign language in China.
1979, the China Association for the Blind and Deaf revised the original four series into two series, which were named "Atlas of the Universal Sign Language for the Deaf and Deaf", and then successively compiled the third and fourth series. At the end of 1985, four series of sign language words were added, deleted and modified. 1987 At the third national conference on sign language work, the sign language map of deaf-mute people was renamed as Chinese sign language.
1990 The reference book "Chinese Sign Language" edited by China Deaf Association was officially published, and 1994 The sequel to "Chinese Sign Language" was published, which is of great significance for popularizing and standardizing sign language.