Introduction to the former revolutionary site of Xuejiazhai: Xuejiazhai has many mountains and dense forests like the sea, with thousands of walls standing in the center, and the terrain is very steep. The village is shaped like a gourd, with cliffs on its southeast, southeast and west sides, and thick bushes on the hillside. The whole mountain stronghold has a majestic trend and is easy to defend but difficult to attack militarily. Xuejia Village currently has the former revolutionary sites No. 1, 2, 3 and 4. No. 1 Village was the residence of the first and third detachments of the Shaanxi-Gansu border guerrillas at that time, and the others were the residences of the Red Army Hospital, Clothing Factory, Repair Institute and other logistics units and leading agencies. In 1986, dozens of braided grenades, gun fragments and daily utensils used by the Red Army were discovered at the old site.