Just as slang words, table manners, and other common customs vary greatly from nation to nation, so do rude gestures. The last thing you want to do when traveling to a new country is to offend (冒犯) the locals. Here are some hand motions you'll want to be careful about making in certain countries.
Iran
What might seem to Americans like a universally positive gesture is not, in fact, universal. "Unfortunately, in Iran and neighboring countries, the thumbs-up is the same as the middle finger!" explains Dana Hooshmand, an author for Discover Discomfort. In America, the middle finger is the one showing disrespect; in Iran, it's the thumb. So, bear it in mind to avoid making this sign to Iranians.
Malaysia
As a little kid, you may have been blamed that "it's not respectful to point with your index finger!" especially if you dared pair the gesture with laughter. This is especially true in Malaysia. As a result, employees at Disney parks are trained to avoid doing this. Instead, if they must, they use two fingers or, the common alternative is to point with your thumb (particularly the right thumb).
Thailand
In USA, patting someone's head can be a sweet gesture, and messing someone's hair is a playful one. But in Thailand, it can be a serious offense. The head "is considered the most sacred (神圣的) part of the body, " she explains. So keep your hands away from others' heads to avoid disrespecting.
Taiwan, China
According to the locals, pointing to the moon will offend the moon goddess. Her punishment for this is very specific: She'll cut your ear of, or at the very least cut it in Van Gogh-style. So if you're admiring a beautiful full moon in Taiwan, try your best to keep your hands by your sides.
