The widest border between Hunan and Jiangxi is the Jinggangshan area in the middle of Luo Xiao Mountains. It is the Luoshan small vein, which connects Guangdong in the south, Hubei in the north and Jiangxi and Hunan in the east and west. Mao Zedong once took a map, pointed to the widest part of the Hunan-Jiangxi border, and decided to enter the Jinggangshan area in the middle of the Luo Xiao vein to establish a rural revolutionary base. This proves that the widest border between Hunan and Jiangxi is Jinggangshan in the middle of Luo Xiao Mountains.