According to the 2009 national census, there are more than 2,000 People living near the borders with Laos and China, in MuongÈ district, Lai Chau province. The voice of the People of The Sewer belongs to the Tibetan-Burmese language group (Han - Tibetan language). When communicating between people of the same ethnic group, they speak their mother tongue, when out in the community, they often use Thai - the language of the more populous neighboring people.

The Sewer at the stilt house. The main production work is to work as a maid, the department on the banks of the Da River to cultivate rice and water. In the past, the People of The Sewer only worked in the way of distributing, burning, poking holes, since about 1960, the form of cultivation by pickaxe gradually became popular. Gathering, fishing in rivers and streams and hunting are also important activities for their living. Men and women know how to knit, the product is hunchback, the costume box, the rice basket ... , there is a place to knit the red-dyed clouds. Although weaving did not develop, the Tributes planted cotton, to sell or exchange for fabrics from other ethnic groups.

Young women have hair around their heads, and married women bun their hair to the top of their heads. Women wear tube skirts and shorts (split on the front or side of the armpits, fastened or buttoned butterflies in silver or aluminum). Men wearing clothes and clothes; The style of tunic buttoned on the armpits, shoulders, is now rare.

Family cohesiulicity, worship of parents, grandparents and practice of agricultural rituals are the highlights of the spiritual life of the People. In addition to worshiping according to patriarchal customs, families also worship their parents-in-law on the occasion of the New Year.

In regular display at the Museum of Ethnology of Vietnam, artifacts of the People: cloud boxes, flocks, crossbows, that catch fish ... introduced in the space for ethnic groups of Tibetan - Burmese language groups, on the 2nd floor of the "Bronze Drum" building.