What are the ancient cities in China?

Langzhong Ancient City, located next to Langzhong New City in Sichuan and beside Jialing River, is as famous as Lijiang in Yunnan, Pingyao in Shanxi and Shexian in Anhui, and is called the four ancient cities in China. The architectural site selection of the ancient city is a typical site selection of ancient architectural cities in China, which fully conforms to the astronomical geomantic theory of the Tang Dynasty and is called the ancient geomantic city. The ancient city of Langzhong is completely protected and has a unique China style. Existing ancient city area 1.78 square kilometers. It is the only one with the largest preserved scale in Sichuan and one of the four best preserved ancient cities in China. The chessboard pattern of the ancient city, which is a real treasure house of China's architectural art, is a combination of buildings with North and South styles. The ancient city has a long history, and is rich in astronomical culture, Bayu culture, Three Kingdoms culture, ancient building culture, religious culture and folk culture, showing the unique features of Langzhong, a famous historical and cultural city in China. Old Town of Lijiang, with a history of more than 800 years, is located in the middle of Lijiang Bazi, covering an area of about 3.8 square kilometers. It was founded in the late Southern Song Dynasty. It is the Fu Xuan branch of Lijiang Road in Yuan Dynasty, the residence of Lijiang Military and Civilian Mansion in Ming Dynasty and Lijiang Mansion in Qing Dynasty. Old Town of Lijiang is unique in site selection, and makes full use of the mountain topography and surrounding natural environment in layout. Xiangshan Mountain, Jinhongshan Mountain and Monkey Mountain are in the north, and the east and south are naturally connected with the open flat dam, which not only avoids the cold wind in the northwest, but also faces the light source in the southeast, forming an overall pattern of sitting in the northwest and looking at the southeast. Yuquan River, which originated at the foot of Xiangshan Mountain in the north of the city, enters the city in three streams, and then divides into countless tributaries, crossing streets and lanes and spreading all over the city, forming a poem and painting of "water around the front of every house and willow hanging behind every house". Pingyao is a national historical and cultural city and a world cultural heritage. Pingyao Ancient City is located in the middle of Shanxi Province, on the southern edge of Taiyuan Basin, 90 kilometers away from Taiyuan, the provincial capital. Fenhe River flows south, and Tongpu Railway and Universiade Highway in the south pass through the northwest of the county seat, which is located at the crossroads and has convenient transportation. Pingyao has been a commercial distribution center since ancient times, and has the reputation of "Pingyao City, with endless dissatisfaction" and "Little Beijing". Pingyao has a long history. As early as the Neolithic Age, human beings thrived here. According to legend, Emperor Yao was originally sealed in pottery, so Pingyao was also called "ancient pottery" and "flat pottery". Zhongdu in the territory was the ancient city of Jin in the Spring and Autumn Period and belonged to Zhao in the Warring States Period. Tao Ping County was established in the Qin Dynasty, Zhongdu County and Jingling County were established in the Western Han Dynasty, and Pingyao County was changed after the Northern Wei Dynasty was abolished. Pingyao has been a county town for more than 2700 years, but it has been brilliant in politics, economy and culture. Shexian, an ancient city, is located in the west of Huangshan City, the center of the tourist routes of Hangzhou, Qiandao Lake, Huangshan Mountain and Jiuhuashan Mountain, where Huizhou-Hangzhou Highway and Tunwu Highway meet, and anhui-jiangxi railway passes through the territory with beautiful scenery. Gardens, pavilions, ancient bridges, stone workshops, ancient pagodas and ancient houses can be seen everywhere. The main attractions are Taibai Pagoda, Xin 'an Monument Garden, Taiping Ancient Bridge, Guo Xushi Square, Doushan Street and Yuliangba. Taibai Building, located on the west side of Taiping Ancient Bridge, is a double-decker pavilion, a typical Huizhou architecture. You can enjoy the beautiful scenery and the shadow of the ancient bridge tower in the west of the city. The Taiping Bridge in front of Taibailou, built in Hongzhi period of Ming Dynasty, is the representative of the porous giant stone arch bridge.