Turning the globe by hand does not mean that you understand the world. The fact is that human beings have only explored 1% of the ocean world and set foot on 50% of the land surface world. Land exploration is the same as the ocean, less than one percent. And within this one percent, there are also mysterious areas that nature hides and does not want people to set foot on. They may be around, but they cannot enter. There are also Some mysterious areas that are artificially hidden are secrets that only those who live on the top of the pyramid know, such as the South Pole. And those spaces that are hidden from the world and are hidden by nature have a unified name - Yin Market.