C248 Slate in water mysterious gouge

When I got back to the dormitory, I seemed to remember something.

"What's wrong? There are so many things on your mind. Is there something wrong?" The Zodiac asked curiously when he saw that I had not opened the door and entered the room for a long time.

"Do you remember the place where we saved He Jun?" I remembered something.

"I remember. At that time, he was almost at the bottom