In the history of ancient China, military towns of various grades were important elements of the defense system of the country.
Key military towns along the Great Wall of China include Ji Town (èÂÂéÂÂ), Liaodong Town (è¾½ä¸ÂéÂÂ), Xuanfu Town (宣åºÂéÂÂ), Chang Town (æÂÂéÂÂ), Datong Town (大åÂÂéÂÂ), Shanxi Town (山西éÂÂ), Zhenbao Town (çÂÂä¿ÂéÂÂ), Yansui Town (延绥éÂÂ), Ningxia Town (å®Âå¤ÂéÂÂ), Guyuan Town (åºåÂÂéÂÂ), and Gansu Town (çÂÂèÂÂéÂÂ). They were gradually established along the Wall using it as their boundary.