2. Day: the sun.

3. Moon: Moon.

4. star: star.

5. Chen: The darkness at night.

6. Generally used to refer to celestial bodies in the sky.

7. There is also a saying that Chen is the general name of the sun, the moon and the stars (the general name of the universe and the planets by human beings).

8. Shan Hai Jing recorded the origin of the sun, moon and stars for the first time.