Rock fence in Ca Ha village, Giang Chu Phin commune, Meo Vac district (Photo: VNA) 
The Mong fence their houses with stone walls. It takes them several months to collect stones of different sizes and shapes to build a fence without using any kind of cement. (Photo: VNA) 
Rock fence surrounds the earthen house of H'mong people in Lung Cam village, Sung La commune, Dong Van district. (Photo: VNA) 
The Mong fence their houses with stone walls (Photo: VNA) 
Rock fence of Vu Mi Su's family in Ca Ha village, Giang Chu Phin commune, Meo Vac district (Photo: VNA) VNA
