On June 5th, 20 12, National Cultural Heritage Administration announced at the Juyongguan Great Wall in Beijing that after nearly five years' investigation, the total length of the Great Wall in China was 2196.18km, including the Great Wall, trenches, single buildings, enclosed castles and related facilities. This is the first time for China to scientifically and systematically.

According to historical documents, the Great Wall surpassed Wan Li in three dynasties:

First, the Great Wall of Wan Li, which runs from Lintao in the west to Liaodong in the east, was built by Qin Shihuang.

Second, the Great Wall and beacon tower pavilion built in Han Dynasty, starting from Xinjiang in the west and Liaodong in the east, are two Vindry;

Third, the Great Wall, built in the Ming Dynasty, starts from Jiayuguan in the west and reaches the Yalu River in the east, with a total length of 14700 Li. The Great Wall of the Jin Dynasty is also near Wan Li.

If you add up the Great Wall built in different periods, it will be more than a dozen Wan Li. These Great Wall sites are located in Xinjiang, Gansu, Ningxia, Shaanxi, Shanxi, Inner Mongolia, Hebei, Beijing, Tianjin, Liaoning, Heilongjiang, Henan, Hubei, Hunan, Shandong and other more than ten provinces, cities and autonomous regions.