Chinese indigo Restoration & Dyeing Experience Exhibition Space Taiwan's high quality natural blue dye was an important trade commodity during the Qing Dynasty, which led to the development of the blue dyeing process in Taiwan, but due to the emergence of chemical dyes. Traditional blue dyeing techniques and bluegrass planting are gradually disappearing with time. This design is based on the process of Chinese indigo dyeing, soaking, bluing and precipitation, extending the three techniques of splitting, spreading and stacking, and through the natural layers of color.