On the west side of the Wang Estuary, it was unknown when, but dozens of caves appeared on the side of the mountain. Each hole was four meters deep and four meters wide.
From Jiangbei City to the Wang Estuary, one had to bypass Shandong City. As a result, it was difficult for people to discover these caves.
Presently, the caves that were originally several meters deep had basically been filled up, and soldiers had been been climbing out incessantly.
