“西北民族” refers to the various ethnic groups that inhabit the northwestern region of China, which includes provinces like 甘肃, 宁夏, 新疆, and 青海. This area is known for its diverse cultures, languages, and traditions, with significant populations of ethnic minorities such as the 维吾尔族, 哈萨克族, and 藏族. These ethnic groups have unique customs, clothing, and festivals that reflect their rich heritage. The region is also characterized by its stunning landscapes, including deserts and mountains, which influence the lifestyles and economies of the local communities.