C536 Yin Grotto Small World

In the world of Yin Cave.

This was a small world without any daylight, and its circumference was only a hundred miles.

The disciples of the Chixiao Martial School arrived here first. Once they stepped onto the black ground of the Yin Cave, everyone started to look around vigilantly.

The ground was dark and rugged. The environment was tranquil. There was not a single breath of wind