The Hmong grow hemp and use its strong fibres to make their clothes, which they dye with indigo. In certain villages, people raise silkworms to make the beautiful silk thread they use to embroider their clothes. The Dao (Mien) women and the Hmong make veritable pictures with their incredibly precise embroideries. Lots of traditional fabrics can be found in the Sa Pa and Bac Ha  ethnic markets. Most of the patterns embroidered by the Hmong and the Dao or woven by the Tay and the Thai carry a meaning. They often symbolise a baby, a tree, a bird, a snail, the moon, etc.