Specifically, it was the tray of the night pearl lamp.
Various patterns were also carved on the tray below, and if Yang Yu hadn't mentioned it, they would never have realized that these patterns could be connected with the ones on the door.
Of course, they weren't connected randomly, but one-to-one.
Yang Yu pointed at one of the doors, then at a pattern on a tray, "Look, these two patterns connected together can form part of this painting."
The painting Yang Yu referred to was the one on the floor.
Everyone looked and indeed it was so.
The two combined paintings formed the top part of the floor painting, and the connecting line just passed through the top of that painting.
The combined paintings were small, the floor painting, large, but if the combined paintings were enlarged proportionally, they were indeed identical!