DON'T Placing Chopsticks Unevenly
Chinese people regard it as inauspicious to place a pair of chopsticks unevenly on the table before, during or after a meal. They call it "son thong liang duan", or " three long and two short", which indicates death. According to traditional Chinese customs, dead bodies were placed in coffins in the past. In those days, coffins were made from two short boards at the front and back, and three long ones at the two sides and the bottom-hence the saying. Therefore, it is taboo to place one's chopsticks unevenly on the table.
DON'T Pointing at Others with Chopsticks
You should never perch your chopsticks between the thumb, middle, ring and little fingers, while sticking out your index finger, as it implies abuse. In most cases, Chinese people point at others with their index fingers to scold them. Therefore, such a movement is unacceptable. It is also considered bad manners to point at others,with your chopsticks, while chatting during a meal.
DON'T Sucking the Chopsticks Noisily