Sea of Suffering Sword Village, Heart Demon Sword Prison is divided into three stages: Entering the door, Ascending the hall, and Entering the room.
These "door," "hall," and "room" naturally represent different levels of danger.
And the "secret of immortality" that Ling Handeng once spoke of should be behind the room, at the junction of the Heart Demon Sword Prison and Sword Dao River.
There lies the "Obsession Layer" and "Rotting Thought Layer" beneath the Third Layer of the Sea of Suffering.
...
Song Yan used the "Sword Moth in the Hall" as his form and arrived at the end of the hall.
The door at the back of the long-unused hall was casually pushed open by him, revealing a narrow path reminiscent of a sheep's intestine before his eyes.
The path was paved with ancient bricks, flanked by dark shadows, with only the center revealing the "light emanating from a half-covered, half-closed door," illuminating the path.
