Famous Chinese writer Lin Yutang(林语堂) said that as a good manner western people hold the hands of others but Chinese people hold their hands only. A very interesting point,isn't it?
As today is the Chinese New Year of 2024 or Year of Loong (Happy New Year and Best Wishes to everybody, by the way), I see with my own eyes many people in China greet each other by holding their own hands too, espeically in the showy parades of ancient-style costumes. But I notice that in making the gesture some people clench their left hand into a fist, the other the right one. On my asking, they give different answers, the most frequently given being "I get this from the TV drama (or video, picture, etc) I see".
Is there any rule for that etiquette?