Cross the Aoting Pavilion. According to the little red book, the words "Crossing the Aoting Pavilion" were written at the entrance of the pavilion in Tongren Ancient City, which is the name of the pavilion, indicating the meaning of to be no.1 and taking the lead. Tongren Zhongnanmen Ancient City, referred to as "Tongren Ancient City" for short, is located in the center of tongren city, facing the water in the east, south and west, and only facing the mountains in the north. The terrain is dangerous and easy to defend but difficult to attack; With a total area of 37,000 square meters and a total area of 26,000 square meters of ancient residential buildings, it is the only original historical block in tongren city that can reflect the style of the ancient city and is a unique national cultural resource in tongren city.