C361 Ghost Infant Beast
The Yinshan was a mountain with a dense amount of Yin Qi, and the Demon Beast that was produced by this mountain was a Yin, which was extremely savage. The Yinshan was always shrouded in Yin Qi, and never saw the sun, so it was famous for being a dangerous place.
Most of the Martial Cultivator s would enter the Yinshan during this period of time because it was very unwise