The old demon of Tianshan is called the black demon, which is condensed by its own magic power and gathers the poison of the five poor in the land of five poisons. This endless poison has been refined into a series of poisons. Drug killing can poison people as well. Eight blood knives fight with closed breath, so as to keep intoxicated. However, such a fight, a huge physical expenditure, long-term closure is not desirable.

The black devil is deified into a thousand ways of killing poisons and gases. In the black devil battle, eight blood knives fight one after another, but they are always inseparable from the black devil...