Is it difficult to separate colors in Jinchang’s drawings?

It is difficult to distinguish colors in Jinchang's drawings. To separate the colors of Jinchang's drawings, you need to learn to use color blocks, thin stems, skimming, spray moiré, color combination, welting and continuous drying, etc. The process is complex and includes a series of procedures such as color separation, engraving and color mixing. It is extremely complex, extremely costly, consumes time and energy, and has a high error rate.