1. The old man pours tea for the junior: At this time, the junior should clench his left hand into a fist, with the back of his fist facing up, and tap the table with his five fingers. Generally, three knocks are enough, which means to bow down and bow down to the PBC who poured the tea!
2. To pour tea for a peer: Just close your ring finger and middle thumb and tap the table three times to show that you give the other person the due attention.
3. The junior pours tea for the old man: the old man can tap the edge of the cup with one finger to show his attention.
4. If an old man meets a junior who appreciates the cup more, he can tap the edge of the cup three times with his middle thumb to express his appreciation.