She got many Taoist talismans from Shangguan Yang. Among them, a kind of talisman could make ghosts show their real appearances. In that case, the ghost could take revenge by herself, but the man must deserve the punishment.
If the man was innocent, Gu Ning wouldn't allow the ghost to kill him.
When Jiang Yutong turned around, she saw Gu Ning behind her and was scared. She didn't expect to see anyone at this time and she hadn't felt it at all.
"Who are you? What are you doing here?" Jiang Yutong asked coldly. To be specific, it was the ghost that was talking with Gu Ning.
After Jiang Yutong was possessed by the ghost, her consciousness fell into deep sleep, so the ghost controlled her mind now.
"As a ghost, you possessed a human's body. It's not allowed in this world. You should be punished for doing that," Gu Ning said coldly.