How to shake hands means bargaining?

That's the code word of the transaction, for the privacy of the transaction.

Sign language is played as follows:

Use five fingers to represent one to five, that is, stretch a few to represent a few; From six to ten, play five numbers with five fingers, that is, hold them with four fingers from the index finger to the ring finger, representing six, which is called "scraping six"; Pinch the thumb, forefinger and middle finger to represent "seven", which is called "pinch seven"; The thumb and forefinger stand apart into eight, which is called "fork eight"; The index finger is hooked up to represent nine, which is called "hook nine".

Different from language:

The difference between sign language and language mainly lies in pronunciation and whether deaf people think with gestures. Linguists believe that sign language is a symbol, not a language, according to the phonetic properties of language; Deaf education experts, special educators and deaf people themselves believe that sign language is also a language, a branch of language and a special language form from the perspective of language attributes.

However, sign language can't absolutely correspond to written language, and the written language of deaf-mute people is restricted by sign language, so it can't form a correct written language. Although sign language can't be regarded as a language in the full sense, its linguistic attributes indicate that sign language should be one of the language types.

Handshaking is a kind of etiquette, and it is the communication between people, groups and countries, which endows this action with rich connotations. Generally speaking, shaking hands is a way of communication, which can communicate estranged feelings, deepen mutual understanding and trust, and express one party's respect, admiration, congratulations and encouragement to the other.

It can also convey some people's indifference, perfunctory, ingratiating, hypocrisy and arrogance. The handshake between group leaders and heads of state usually symbolizes cooperation, reconciliation and peace. There may be countless handshakes, but only a few are impressive: the excitement of meeting for the first time, the reluctance to leave, the joy of reunion after a long separation, the elimination of misunderstandings, the release of grievances and so on.

Baidu encyclopedia-sign language