river in Guizhou (Kweichow) province and in the Zhuang Autonomous Region of Guangxi (Kwangsi), southwestern china. It is one of the principal tributaries of the Xi River (Xi River system), which forms its delta at Guangzhou (Canton) (Canton). The Hongshui River rises on Mount Maxiong in Qujing, Yunnan province. Its upper course is named the Nanpan River. It flows south and then northeast and is joined by the Beipan River at the border of Guizhou and Guangxi. Below this point it is known as the Hongshui River. It then flows across northwestern Guangxi, joining the main stream of the Yu River (Yü River) at Guiping after a course of 215 miles (345 km). The Hongshui River and its tributaries together drain almost all of southwestern Guizhou and northwestern Guangxi. Its chief tributary is the Liu River, which joins it shortly below Laibin (Laiping). The section below Laibin and the Liu River as far as Liuzhou are navigable by shallow-draft junks. The upper stream of the Hongshui, however, is so impeded by rapids and deep gorges that it is virtually unnavigable. Its valley and those of its tributaries, nevertheless, provide the principal routes into Guizhou from the south.