Generally speaking, shaking hands is a kind of communication, which can communicate separated feelings, deepen mutual understanding and trust, show respect, admiration, congratulations and encouragement to a person, and 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.
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Matters needing attention when shaking hands
1, don't shake hands with others with your left hand. Especially when dealing with Arabs and Indians, remember this, because in their view, the left hand is unclean.
Don't shake hands in a hurry. When shaking hands, you should follow the order and walk in turn. In particular, remember that when dealing with Christians, you should avoid crossing the hands of the other two when shaking hands. This shape is similar to a cross, which is very unlucky for Christians.
Don't wear gloves when shaking hands. It is allowed to shake hands with people.
4. Don't wear sunglasses when shaking hands. Only women wear tulle gloves in social situations, except those with eye diseases or eye defects.
Don't put your other hand in your pocket when shaking hands.
6. Don't shake hands with someone who is still holding something in the other hand. For example, holding cigarettes, briefcases, etc.
References:
Baidu encyclopedia-handshake