Each Hmong family in the Bac Ha district grows about 0.5 hectares of sand dunes, earning 100-120 million VND per year, 6-7 times higher than that of rice and maize. The valley of 10 hectares of sand …
Each Hmong family in the Bac Ha district grows about 0.5 hectares of sand dunes, earning 100-120 million VND per year, 6-7 times higher than that of rice and maize. The valley of 10 hectares of sand …
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