Introduction to the Zhiguo Stone: This stone stands on a hillside at about 40°, surrounded by green grass, wild flowers and ancient cypresses. It leans against the Cangguan River and faces the deep stream of Fenshui River. It is truly spectacular. It is said that the command podium of Tai Ni is located at the western foot of Louzi Mountain. The gray-brown sandstone has been washed away by wind, snow, dew and rain, and has remained standing for thousands of years. This huge boulder is about 3 meters high and 2 meters wide. It has two small stones less than one foot square as its pillars. It stands on the smooth stone surface on the edge of a sloping cliff. The gap between the pillar feet can actually be drilled into. three people. If one person pushes it, the strange stone moves slightly, but if three people push it, it remains the same. If ten or twenty strong men push it together, the boulder will sway slightly without moving. The cliff where the Zhiguo Stone is located is a solid piece of shale. On its rock wall, which is more than two feet high, there are four strong and powerful characters "Zisa Great Wall" carved in it. The characters are rectangular and each character is 1.3 meters long. They were inscribed by Zhang Fengyi, the Ningwuguan soldier in the seventh year of Zhengde in the Ming Dynasty (1512). It is called "cliff inscription".