When you cross a street, you are surprised to find that it is no longer the same street as before; when you come to your senses and want to go back, you find that you can never go back.
Yi Li thought that she had just traveled through time and space, and that as long as she found the way back, she could go back to the past; but when the layers of fog were lifted, she was surprised to find that this was not the answer she wanted...