First of all, Wu Xie heard about the legend of the Magic Lake, entered Yangjiaoshan Lake, began to fish for bodies at the bottom of the lake, and found the ancient village at the bottom of the lake. Then, on the way back, he and the fat man prepared their equipment and prepared to go deep into the underground mine at the bottom of the lake.

In the process of diving, the fat man accidentally countered and fell into a coma, so Wu Xie had to explore the lake alone. He discovered the siphon mechanism and followed it into a mine. In the mine, he was in danger of suffocation and coma, but he finally succeeded in entering the jade mine.

The book does not explain in detail how Wu Xie entered the mine through the siphon mechanism, but it can be inferred from some clues or his own wisdom and courage that he may have successfully passed this level.