Introduction to Zangjun Cave: Legend has it that Zangjun Cave was the place where Xue Rengui stationed troops during his expedition to the east. It is also said to be the hiding place where Qi Jiguang fought against Japanese pirates, and it is also said to be the tomb of the Tang Dynasty. There are far more than just one or two such caves in Yilu Mountain, but there are more than 360 in total.