The ancient city of Montenegro is a site that opens its own gate. Our cars are basically driving on the grassland rather than on the highway. If there are no locals, this kind of site without any signs is impossible to find. We crossed a village with only one family. Get off the bus and open the iron door to block the animal, drive the car in, and close the door yourself. After reading the introduction, this is the grassland ancient city controlled by Genghis Khan's relatives. The specific content is ready to write another guide.