1. Mosquito repellent does not repel mosquitoes, but it interferes with their sensory organs, making it impossible for them to locate people.

2. The origin of the ring: In ancient times, when a concubine had her menstrual period, she would wear a ring to indicate that she could not serve the emperor during this period. The meaning of the ring is "abstinence".

3. While seemingly lazy, slacking off at work actually increases efficiency. When we daydream or slack off, our brains activate pre-defined neural networks, making them more efficient at processing information. (How can I subtly let my boss see this message?)

4. If you encounter a thunderstorm while driving on a mountain road, do not get out of the car. Instead, close the windows and retract the radio antenna. If you feel lightning strike the car, do not panic; continue driving, as the car itself has lightning protection features.

5. What is the purpose of the grooves on a bicycle seat? Actually, this design is to protect you, because there are many blood vessels and nerves between our ischial tuberosities, and these grooves can appropriately reduce the pressure on them from the bicycle seat.

6. Just as kitchens have non-stick pans, toilets can also have non-stick toilets. Scientists have added a smooth coating to existing toilets, allowing 90% of feces to slide off naturally without leaving any residue. Scientists say this type of toilet not only effectively prevents bacteria growth from urine and feces but also saves water.

7. To reduce the time that laborers spend taking paid breaks to defecate, the British company StandardToilet has launched a toilet that is not very convenient to use. The tilt angle can turn the sitting posture into a semi-squatting posture, increasing the burden on the legs. It only takes 5 minutes to see the effect, making the legs feel tired. This makes it difficult to stay in the toilet for a long time: if you want to play on your phone, you can only dry everything off and then stand or sit on the floor to play.

8. "Wow!" is a swear word in Taiwanese, but in mainland China, we use it to express surprise.

9. Tigers can also use litter boxes. (This will be useful if you plan to keep a tiger at home.)

10. The squirrel unintentionally planted millions of trees. (This little guy had a habit of burying the pine cones he found, but it seemed to have a terrible memory, so he often forgot where he buried them. As a result, the forgotten pine cones slowly grew into trees.)

11. Try typing a bunch of random letters into TikTok. You'll find that the search results are mostly children's animations, because TikTok assumes that this is something a child would type, and that adults wouldn't normally do it.

12. "Infatuation" is actually a mental illness. It also has a professional term called "erotomania." If you don't see a psychologist, it may develop into schizophrenia in severe cases.