There are many four-character words that describe facial expressions, such as joy, anger, sorrow, joy, sorrow and joy, feeling on pins and needles, etc. Some common four-character words are explained below: 1. Joy, anger, sorrow, and joy describe mood swings that are violent, rich and changeable, and have strong feelings.

2. Sadness and joy describe complex moods, including both sadness and joy.

3. Sitting on pins and needles describes feeling anxious and uneasy, as if sitting on a cushion full of needles.

4. Relaxed and happy describes the mood as peaceful, comfortable and cheerful.

5. Feeling like facing a formidable enemy refers to feeling highly nervous when faced with great pressure or crisis, as if facing a powerful enemy.

6. Cheerful expression describes a happy mood, and the facial expressions show it.

7. "Dance upon hearing the rooster" describes a regular life, a positive mental state, and the habit of getting up and exercising when you hear the rooster crow in the morning.

8. Keeping one's eyes fixed refers to focusing, paying attention seriously, without moving one's eyes.

9. Chewing slowly describes the state of savoring food carefully and enjoying it leisurely.

10. The future is uncertain and the future development is full of uncertain factors and in a state of uncertainty.

11. Calm-minded describes being calm, emotionally stable, and not easily impulsive or agitated.

12. Ambitious describes being ambitious, having lofty ambitions, and hoping to succeed in a certain field.

13. Complacency describes being full of confidence, high spirits, and having lofty ideals and ambitions.

14. Throwing a weapon means being very accurate in judging the situation, being calm and composed, and being able to make appropriate decisions at critical moments.

15. Sadness describes a state of frustration, depression, depression or grief, and extreme mental decline.

16. Walking with head held high describes being energetic, confident, extremely self-confident, and walking with a proud and high-spirited posture.

17. Embarrassed describes a situation that is very bad, ugly, awkward, embarrassing, and uncomfortable.

18. Flustered describes being nervous, restless, confused, irritable, and unable to think calmly.

19. Indomitable describes high morale, firm ambition, courage to move forward, fearless of hardships and dangers, and unremitting efforts to achieve goals.

20. A gloomy face describes being troubled, annoyed or frustrated, with a wrinkled facial expression that makes one look sad.

21. Yun Dan Feng Qing describes a peaceful mood, indifferent to fame and fortune, open-minded and cheerful, calm and comfortable.

In short, the four-character expressions described above are commonly used and vivid expressions in Chinese writing, which can better convey the emotional connotation of the characters and make literary creation more charming.