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Body language is very important in our life. Gestures（手势）mean something in one country, but they may not be the same in another. Now let me tell you several body gestures in different countries.
Eye Contact（交流）In Japan
"Look at me when I'm talking to you!" You can often hear it from your parents. It is polite to look at someone in the eyes when talking to them. In most countries, eye contact is an important part of your culture（文化）. But in Japan, you won't hear something like this. Because eye contact in Japan is rude. The Japanese don't look at each other in the eyes when they talk.
Head shaking in India
When you want to say yes, you shake your head up and down. Well, it is not the same in India.
In India, when you want to say "yes", you shake your head. But you don't shake it up and down, but left and right.
Bow In Korea（韩国）
In some East Asian countries, such as Japan and Korea, a bow means politeness and respect（尊重）. In Korea, when you say "Hello", "I'm sorry", "Thank you", and "Goodbye", you should bow at the same time.