What are the requirements for ceremonial posture?

1. Keep your head upright, look straight ahead, mouth slightly closed, chin retracted and neck straight, with a natural expression and a slight smile.

2. Keep your shoulders straight, relax slightly, and sink back slightly.

3. The arms hang flat on both shoulders, and the arms hang naturally. Women can put their hands in front of each other, while men usually place their hands by their sides, with their middle fingers aligned with the seams of their trousers.

4. Keep your chest straight and your back flat.

5. Abdominal retraction: The abdomen should be retracted inward and should not bulge at will. The waist should be straight and the buttocks should be tightened inward and upward.

6. Straight legs. Stand straight with both legs.