when the waiter shakes hands with the customer, he leans forward 31 degrees with his waist as the axis, and his eyes rest on the toe of the other person's shoes.

As a waiter, it is not appropriate to shake hands with guests. But in many cases. When the guest shakes hands with the waiter, the waiter should not avoid it. It is impolite to avoid it. The standard way of shaking hands is: when shaking hands, the two people are about one step apart, the upper body leans forward 31 degrees, the four fingers of the right hand are aligned, the thumb is open, the palm is perpendicular to the ground and the other person is held, the fingers are gently shaken, and the fingers are slightly moved up and down for two or three seconds, and then released after the ceremony. When shaking hands, we should pay attention to shaking hands with men, which can be appropriately heavier to show deep friendship, but not too heavy, and shaking hands with women can be appropriately lighter without causing hand pain, but not too light. When men shake hands, they take off their hats and gloves, but women don't have to. If it is inconvenient to shake hands due to illness, you can declare to the other party and say "Please forgive me". In case of multiple people shaking hands, it should be done in sequence. It is not appropriate to grab the hand or pass the hand above or below the outstretched arm of others to shake hands with the guests.