Can you tell me the secrets of these countries?

This question is designed to test your understanding of the culture, history, customs, and special phenomena of different countries around the world. Through this test, you will have the opportunity to explore the strange customs of various places, understand the historical background of various countries, and reveal those little-known secrets. This will not only increase your knowledge reserve, but also help you broaden your horizons and understand various cultural backgrounds and values, so as to better understand this diverse world. This question is both interesting and educational, and whether you are an adult or a child, you can gain fun and benefits from it.