These fabrics come from Guizhou Provence in China.
They are dyed in indigo with a wax resist.
The wax on the cloth often cracks after it hardens. When it is dyed, the dyes seep into the cracks and make fine lines, which are called "ice veins".
These fabrics also come from Guizhou Provence in China. The patterns were made with a paper stencil soaked in tung oil to make it water resistant. The stencil is used with starch resist made from soy flour and lime to make the design