Fishermen cast nets. Who is the Feng Shui Bureau?

During the Song Renzong period, there was a Xu family in Le Yi, Jiangxi Province, and the Xu family itself was a local clan. In addition, the ancestors of the Xu family also buried a treasure trove of geomantic omen, named "fishermen cast nets". Therefore, since the Song and Yuan Dynasties, besides dozens of Jinshi, there are more than 100 officials of the Xu family. This treasure is located 70 miles south of Leping County, and the locals call it Junshantou. It has a long history and great momentum in Long Mai. In the flat and open field, there is a towering mountain.