On this bookshelf, he didn't see any martial arts that required using another person as a furnace, planting something in their body, so he asked about it.
He knew that such martial arts, not recorded but orally transmitted, were often extremely formidable.
Just like the Rakshasa Kui Divine Skill that Li Xuanji mentioned to him.
When Eastern Prison heard, he initially thought, "If you heal my wounds and let me go, I'll tell you," but then he remembered the torment Su Que had just put him through, and fear arose in his heart again.
He didn't want Su Que to continue torturing him, so he told Su Que all about the "Dao Heart Demon Planting Technique."
As Su Que listened, he took notes.
He learned that after implanting a demon seed in someone through this technique, the emotions of the one who was seeded while practicing, or even their heart demon that arises during cultivation, could influence the practitioner of the "Dao Heart Demon Planting Technique" through the demon seed.
