"Shadow Illusion Bat…"
Li Yun's expression turned solemn, and his heart grew slightly heavy.
The Shadow Illusion Bat was a Rank 6 demonic beast. In terms of pure strength, it was not especially powerful, but its methods were extremely strange and evil, making it a troublesome demonic beast to deal with.
This kind of demonic beast was exceptionally skilled at using sonic attacks to disturb a cultivator's mind. Furthermore, when a Shadow Illusion Bat died, its blood would splatter everywhere and immediately contaminate the cultivator who killed it.
Afterward, the blood would form a black mark. Once that mark appeared, all Shadow Illusion Bats within a hundred-meter radius would sense the summons and rush toward it.
Moreover, this black mark was extremely difficult to erase. Unless one reached the Earthly Core Realm or above and shattered it directly with overwhelming power, one could only wait for an entire day until the mark dissipated on its own.
