Napo (那坡) county is the seldom travelled and mentioned hilly area in Western part of Guangxi, that borders the Yunnan province tothe West. It is also close to the Vietnam border.
The people inhibiting this hilly area are the Yi people and the Black attired Zhuang people.
Pingmeng （平孟) is the most westerly custom checkpoint in Guangxi province into Vietnam. A number of Vietnamese traders setup their businesses at the border town.