Do not stab food:
It is bad manners to stab food with chopsticks. Always pick up food with the tips of the chopsticks.
Avoid passing chopsticks:
When passing food to someone else, avoid passing it directly from chopstick to chopstick. Place it on the plate or use a serving chopstick. This is avoided because it is reminiscent of funeral rituals.
Do not wave your chopsticks:
Avoid pointing or waving them in the air. Treat chopsticks with care as a tool for eating.