Cangzhou three counties are particularly special. Their names are all single words. They used to be countries in history.

Single word county refers to a county with only one word, which is generally an ancient county with a long history and was once a state in history. At present, there are only 100 odd counties in China, most of which are concentrated in Hebei, Shandong, Henan, Shanxi and other provinces with a long history. Among them, Baoding and Handan in Hebei Province have four single-character counties, and Cangzhou has three. The three counties in Cangzhou are all ancient counties with a long history, and they were once states in history. One is that Cangzhou City, located in the southeast of Hebei Province, is named after its location on the coast of the Bohai Sea, which means "the state of the sea". Cangzhou is a historic city in China and the hometown of martial arts. The name of Cangzhou began in the Southern and Northern Dynasties and has been passed down to this day. The 14 county under its jurisdiction is also a place with a long history, among which there are three single-word counties, namely Cangxian, Qingxian and xian county. Cangxian County, located in the southeast of Hebei Province, is surrounded by Cangzhou City, which is a county under the jurisdiction of Cangzhou City. Cangxian county has a long history. Fuyang County was established in the Western Han Dynasty, later renamed as Qingchi County, and the province entered Cangzhou in the Ming Dynasty. The name of Cangxian County began in the early years of the Republic of China and was established after Cangzhou abandoned the county. After the liberation of Cang County during the War of Liberation, Cang County was established in Cang County. After the founding of the People's Republic of China, the organizational changes in Cangxian County were more complicated. At the beginning of the founding of the People's Republic of China, Cangxian City was reduced to Cang Town and merged into Cangxian County. Cangxian county was once established, and it was once subordinate to Tianjin District and Tianjin City. Cangxian County was temporarily abolished and changed to Cangzhou City. After the establishment of Cangzhou Special Zone in June, 196 1, Cangxian County was the resident of Cangzhou Special Zone. In July of the same year, Cangxian Chengguan was designated as the county-level Cangzhou City, and all the cities and counties were again placed under the Cangzhou Special Zone, so Cangxian County can be said to be the mother county of Cangzhou. From 65438 to 0983, the county-level Cangzhou City was promoted to the prefecture-level Cangzhou City, and Cangxian County was subordinate to it. Qing County, located in the southeast of Hebei Province, at the junction of Hebei and Tianjin, is a county under the jurisdiction of Cangzhou City, Hebei Province, and an ancient county with a long history. Shenhu County was established in Qing County in Han Dynasty, followed by Fuyang County, Luchang County, Yong 'an County and Ganning County. Known as Ganning County in the Northern Song Dynasty, it was the headquarters of the Ganning army and was promoted to Qingzhou at the end of the Northern Song Dynasty. At the beginning of the Ming Dynasty, Qingzhou was reduced to Qingxian, but it was changed to Qingxian because of the "River Decision", and the county name is still in use today. Qingxian County belonged to Hejian Prefecture in Ming Dynasty and Tianjin Prefecture after Yongzheng in Qing Dynasty. After the establishment of People's Republic of China (PRC), it was subordinate to Cangxian District, Tianjin District, Tianjin District, Cangzhou District and Cangzhou District. It was also temporarily merged into Jinghai County from 1958 to 19 1, and Qingxian County was changed from 1986 to Cangzhou City. Xian county, located in the southeast of Hebei Province and southwest of Cangzhou City, is a prefecture-level county under the jurisdiction of Cangzhou City. Xian county has a long history. The city was established in the Qin Dynasty and the county was established in the early Western Han Dynasty. After that, Liu De, the son of Jingdi, made the country (Hejian Country) the capital, and was later ruled by Hejian County. Lecheng County was renamed Lecheng, Guangcheng and Leshou. When Jin was promoted to Shouzhou, it was later changed to xian county in the early Ming Dynasty, and it belonged to Hejian Prefecture in the Ming and Qing Dynasties. After the founding of People's Republic of China (PRC), xian county successively belonged to Cangxian District, Tianjin District, Tianjin City, Cangzhou District and Cangzhou District. Cangzhou has been a territorial city since 1993 revoked Cangzhou District.