The Sword Forbidden Region was the only forbidden region in the Yinghuang Province.
This place was located in the western part of the Yinghuang Province near the central area. At the same time, it also covered a section of the mainstream of the Immortal Enrichment River.
Before the Immortal Enrichment River entered the Sword Forbidden Region, the river was filled with immortal Qi. After it flowed out of the forbidden region, it turned pitch-black.
This place was covered in thick fog all year round and sunlight couldn't enter. Hence, from a high altitude, one could only see the pitch-black river flowing out but they couldn't see what had happened to the river in the forbidden region.
The fog enveloped everything.
One could only faintly see that the Immortal Enrichment River had divided the Sword Forbidden into two areas. However, the lingering fog seemed to have connected them together again.