This is the 'line of soul-inducing wood'. The silver-eyed woman smiled and said, "A thread of soul-inducing wood can be completely burned into a puff of smoke by just lighting it. After swallowing the smoke completely, you can fall into a deep sleep and sleep for a thousand years." The 'inner demons' that affect the practitioner and make it difficult for the practitioner to make further progress will become weak and no longer affect them....