"Mainland" has two meanings: one refers to the land in the water, such as Orange Island in Changsha, Tianxin Island in Wuhan (located in Xiangjiang River and Yangtze River respectively, known as Jiang Xinzhou in geomorphology) and Pearl River Delta. Second, it refers to the mainland, such as Asia, Europe and Australia. There are indeed many place names in China that contain the word "Zhou", such as Jingzhou, Lanzhou, Hangzhou and Guangzhou. Some areas are close to water, while others are far from rivers. Why don't you use "Zhou" instead of "Zhou" in the place name of Linshui? This requires looking for answers from history. "Zhou" is an administrative division of our country, and Kyushu existed in our country as early as the Qin Dynasty. In the Eastern Han Dynasty, the whole country was divided into thirteen states. Since then, local administration has basically been divided into three levels: state, county and county. Until the Ming and Qing dynasties, the scope of the state narrowed and the name of the state increased accordingly. Today, the origin of place names with the word "state" is mostly directly related to the ancient state names.