C142 Ancient Mural

Ning Xiaoshu took another look at the stone wall, his attention drawn to the most distinctive feature: a missing piece in the upper right corner. It was precisely because of this gap that the stone walls were movable.

In theory, with sufficient force, any of the stone walls should be able to move. Yet, there was no change, leaving him baffled.

After a moment of thought, Qing Tong suggested