Song Jianning is a doctor. One day, he saw several of himself. Just when he was panicking, he was thrown into another world.
By the way, many years ago, stones on the earth did not necessarily fall to the ground when they flew into the air, walnut trees could walk, and clouds could be taken out of pockets.
The earth is too chaotic, so several forces from the universe negotiated and decided that the shape of the earth and its surroundings should be: you can shed tears when you are in pain, you will suffer when you are sick, and you will have desire when you see wealth. The rules were set, the key was made, and hidden.
Wait for the appointed time to open.