Elderly visitors to the Lung Khau Nhin Market. Vietnam. Lung Khau Nhin Market is rural tribal market hiding itself amongst the mountains and forests of the far north Vietnam about 10 km from the border with China. The market plays an important role for the local ethnic people, Flower Hmong, Black Zao, Zay, and very small ethnic groups  Pa Zi, Tou Zi, Tou Lao. Tourist trips to the market run from Sapa and Lao Cai every week. Lung Khau Nhin Market, Vietnam.15th March 2012. Photo Tim Clayton