20 little-known facts to take you into the unknown and let you experience the vastness and wonder of the world.

1. Currently, the world's thinnest glass is only 0.12 millimeters thick, making it the thinnest glass ever mass-produced using the float glass process.

2. The faces we see every day can become characters in our dreams.

3. A survey conducted by the UK Office for National Statistics showed that people who commute more than 45 minutes each way each day have lower life satisfaction and lower work productivity.

4. Does drinking alcohol really ward off the cold? Actually, this is a common misconception; the feeling of warmth after drinking is just an illusion.

5. Ancient people believed that the soul of the deceased would appear at a funeral. Wearing brightly colored clothes would make it easier for the soul to see the deceased, while wearing black clothes would make it harder for the soul to spot the deceased.

6. People cannot cry in space because there is no gravity, so tears cannot flow.

7. Table tennis, a traditionally strong sport in China, originated in England at the end of the 19th century.

8. Just like fingerprints, everyone's tongue has its own unique tongue pattern.

9. A person can never walk in a straight line with their eyes closed, no matter how accurate their sense of direction is.

10. South Africa is the only country in the world with three capitals.

11. Feeling ugly may be a medical condition – “Imaginary Ugliness Syndrome”, scientifically known as “Body Deformity Disorder”.

12. Scientific research has found that bedwetting in young children is a signal of loneliness, mainly because their mothers are not spending enough time with them. If mothers spend more time with their children, bedwetting may stop.

13. In Linyi, Shandong Province, there is an uncle named Alipay. His brother is named Alipay Shun and his sister is named Alipay Hua.

14. When eating pineapple, the bromelain in the pineapple digests the protein, which is why you feel a tingling sensation on your tongue.

15. Psychological research has found that answering your boss's phone at home or on weekends can have adverse effects on your health.

16. Fuji apples originated in Japan, but they actually have nothing to do with Mount Fuji.

17. Sleep phobia is a medical condition, and few people know that people with this condition are afraid to sleep.

18. If a sow's front teats produce more milk than her rear teats, the piglets will fight over who gets the front teats.

19. Only female mosquitoes suck human blood; male mosquitoes only suck plant sap.

20. Hitler suffered from claustrophobia, so he filled the elevator in the Eagle's Nest in the Austrian Alps with mirrors to make it look more spacious.