When bowing, your hands should hang naturally on both sides of your clothes, not back and forth. In business etiquette, hands naturally cross on the chest, thumbs inward and right hand in front, but it seems to be an adult and not suitable for students. When bowing, put your hands on both sides of your thighs and point your middle finger at the seam of your pants. When bowing, stand at attention, take off your hat, look at the recipient, and your eyes will naturally droop with the bow to show your modesty. When saluting, you can greet "Hello" and "Welcome" at the same time, or you can express your gratitude or apology. After the ceremony, when standing upright, you should also look at each other politely, which makes people feel sincere. When bowing, never put your legs aside, bend down casually or just lean forward as a salute. This is a sign of indifference and disrespect to the recipient. In life, we often bow our heads and roll our eyes at each other. This method is very inappropriate and should be avoided. It is impolite not to eat or smoke when bowing.