After a long dark passage, there was a slow and steady sound of footsteps. A tall and thin figure came down from the stone steps, which were covered with dust for many years. However, where the thin and tall figure walked, it was gray.

ordinary immortals can do this. For example, they can walk in the air and step on the steps, but in fact, the sole of their feet is a small distance from the ground, so they can avoid splashing dust.

but this tall and thin figure is not like this. In the dark, you can see a row of footprints on the stone steps, which shows that...