It was not until then that Liu Ye realized that the building was not covered with moss, but something as black as mud.
The Netherworld Sand!
Liu Ye's eyes narrowed and his heart skipped a beat. He finally recognized what it was.
The Netherworld Sand, also known as the Soul-seizing Sand, was a very precious and extremely vicious poison.
It was said that the Netherworld Sand could only be found in a place where the weather was freezing cold, and that place must satisfy some other sinister conditions.
For example, a large number of vengeful souls, a large number of withered bones, a large amount of death aura, and everything would gather for at least a century.
A soul-devouring pill, a thousand pieces of Nether Spirit!
It meant that a soul sand could put a person to death, and if there
