There was some Yin floating in the hole, and it grew dense in the grave tunnel. It seemed the grave was the source of the strong Yin. Luckily, no matter how strong the Yin was, Gu Ning wouldn't be affected.
In fact, if this grave belonged to a person of a high social status, like a son of the duke, it should be placed somewhere with better feng shui. It was abnormal that the female ghost's husband was buried here as a son of the duke.
Gu Ning had doubts, but asked nothing about it. She told the female ghost to go inside first, because it could directly float in.
The female ghost couldn't wait a second longer, and entered the hole at once, but it didn't go to the grave right away, because it still needed Gu Ning's help.
Gu Ning took a rope out of the telepathic eye space, and used it to slide down to the grave tunnel.
They walked about 20 meters till they reached the grave.