(2) The expression is calm and comfortable (lips are slightly closed, the jaw is miniature, and the face is calm and natural).
(3) The shoulders should be flat and relaxed, and the arms should be naturally bent on the legs, or placed on the armchair or sofa armrest, with the palms down.
(4) When sitting in a chair, stand up straight and chest out, and the upper body is naturally straight.
(5) Knees are naturally close together, legs are upright or placed sideways, and feet are close together or overlap or form a small "V" shape.
(6) Sitting in a chair, at least 2/3 of the chair should be filled, and the sofa with a wide seat should be at least 1/2. Don't lean back in the chair for at least 10 minutes after taking a seat. After a long time, you can lean back gently.
(7) When speaking, according to the direction of the speaker, turn the knees of the upper body to the speaker and keep the upper body straight, so as not to show inferiority, compliment and please. Pay attention to manners and respect others, but don't lose self-esteem.
(8) When leaving the seat, naturally and safely, step back half a step with your right foot, and then stand up.