C307 Three Caves of Cunninghamia lanceolata(1)

After setting the frequency, I had the Brother Xue and the others arrange for a search. The last time I came back from XG, I improved a little on the Searcher. Now, I can search for fixed frequency signals that are at most 10 kilometers away from me. However, within the city, this area could only reach a radius of three kilometers.

Brother Xue had experience with this kind of thing