The edges of the shadows are like steel bars stuffed with various kinds of steel pipes. The images are described in black and white buildings or black and white keys on pianos.

Ye Cheng stared at the old man's painted form and felt more and more that he had seen it somewhere. Think about it carefully. Didn't he see it outside the temple? Although it was only a black shadow, the shadows in all directions resembled the secret key. In retrospect, the black shadow that the old man first drew was not the disc figure he saw first.

Combining the scene in front of the temple with the state of...