What are the dyeing processes in the Tang Dynasty?

China has a long history of dyeing technology. Batik, tie-dyeing and openwork printing are called the three major printing technologies in ancient China:

1. Batik is an ancient folk traditional textile printing and dyeing handicraft in China. In ancient times, it was called batik. A wax knife was dipped in melted wax to draw flowers on the cloth, and then indigo was dipped. When the wax is removed, the surface of the cloth shows various patterns of white flowers on a blue background or blue flowers on a white background. At the same time, due to the role of wax in resist agent, the fabric naturally cracks, which makes the fabric show a special ice pattern, which is particularly eye-catching.

2. Tie-dyeing refers to a dyeing method in which the fabric is partially knotted so that it cannot be dyed. According to the designed pattern effect, the cloth or garment pieces are tied up with thread or rope in various ways and put into the dye solution. Because the dye can't penetrate, a natural special pattern is formed at the tied place. Also,