Can Cau is a busy weekly market held in Si Ma Cai District of Lao Cai in every Saturday. Located just mile from the border between Vietnam - China border, it take people a great effort to get there. Even though, this market attract thousands of people travel there to trade, to meet, and to look for love-mate. There are some groups of minority ethnic people gather at this market, like Red Hmong, Nung, Phu La and even Chinese people from across the border. All kinds of goods are traded here, from fabrics to various types of livestock to the powerful local corn wine. The Kinh (the majority group in Vietnam) far from the Red river Delta also come there for good buffaloes as it is the merchandise this market is most famous for. There will be a large section for buffalo trading alone, where you can find buffaloes from variety of type and size.