What is the riddle of the Chinese Riddle Conference? What is the answer?

1. In the morning the head faces west, in the afternoon it faces east, at noon it is the shortest, and the day is long at both ends. (Playing two words daily phenomenon) shadow

2. Can eat without mouth, can jump without legs, there is a river without water, walk without regret. Yellow River? Zhujiang River? Huaihe River (playing the name of a province) Sichuan

7. Both of them are absent (playing the name of a country in two characters) Yemen

8. Short half, connect half. Connect it, or break it. (playing a word, seven strokes of the word) fold

9. three orders (playing a "Journey to the West" characters) eight ring

10. a good start (playing a word vegetable) ginger

11. Houyi bow nine sunset (playing two words Jiangsu county name, the first ten strokes of the word) shoot the sun

12. rotten wood is useless, there is a hole on the top. A little processing, and into a hole. (Playing a word, ten strokes of the word) trick

13.A day's plan is in the morning (playing an opera line) Dan

14.Thousands of miles? Thousand Miles (playing a word with seven strokes)Bo

15.A Gentleman Watches Chess (playing a famous contemporary writer)Mo Yan

16.Laughing Continuously (playing a two-word foreign capital)Doha

17.Not Bad, Not Bad (playing a two-word form of traditional culture)Couplet

18. "Crossing over the high mountains, crossing over the plains, crossing over the rushing Yellow River and Yangtze River." (playing four words track and field events) triple jump

19. A needle in one hand? A hand with a line (playing an idiom, the first word eleven a) look forward to wear

20.Slender man resting three nine days (playing three words of national musical instruments, the first word five strokes) winter does not pull