The pronoun "Kyushu" comes from the ancient book Gong Yu. It is said that when Dayu was in charge of water conservancy in ancient times, the world was divided into Kyushu. Since then, Kyushu has become synonymous with ancient China. The records of the Three Emperors and Five Emperors are different in each period and in different ancient books, so is Kyushu, and the scope division in different periods is also different. Kyushu in Dayu period was Yuzhou, Qingzhou, Xuzhou, Yangzhou, Jingzhou, Liangzhou, Yongzhou, Jizhou and Yanzhou. Erya Dish records that Jizhou, Yuzhou, Shuozhou, Jingzhou, Yangzhou, Yanzhou, Xuzhou, Youzhou and Yingzhou are Kyushu, which is not only different in Kyushu, but also different in different periods.
Kyushu was later called twelve states, because the alliance of Jizhou, Youzhou and Yingzhou, together with the original Kyushu, became twelve states. Kyushu was originally a general term, because the country is a small and vast area, which was divided into Kyushu, and it was not mentioned exactly until it was gradually divided into specific areas. Kyushu is divided into nine administrative regions, which may be a record of the Warring States period.
There are three main types of division, which belong to different regions. The first division is Yuzhou, which belongs to the Central Plains and is located in the lower reaches of the Yellow River, Henan, Shandong and other places. Xuzhou starts from the Yellow Sea, Mount Tai and Huaihe River in the east, and also includes Shandong, Jiangsu and Anhui. Jizhou starts from Hukou of the Yellow River, Yanzhou from the lower reaches of the Yellow River, Qingzhou from Bohai Sea, involving Hebei and Shandong Peninsula, Yangzhou from Huaihe River, Jingzhou from Jingshan, Liangzhou from Huashan, and Yongzhou from Heishui and Xihe River.