C67 suppressive ancestral spirit

I say, when we left the house earlier, why did Gu Lvhan keep looking back at us?

"No way. Then why can't I see it?" I asked curiously.

I can see most ghosts.

"Because this is not an ordinary ghost. To be more precise, he is not considered a ghost, but an evil spirit. He has a strong will and has been in the human world for a long time." Gu Lvhan earnestly explained