What is an algae well pattern?

The origin of ancient traditional patterns in China can be roughly divided into three parts. First of all, it comes from folk crafts: ceramics, embroidery, window grilles, blue printed cloth, batik, paper-cutting, carving, weaving and so on. It was created by the working people according to their own will. It is generally simple, rough and full of local flavor. Secondly, it comes from religious arts, such as religious legends and myths, murals, algae wells, niches, statues and costumes, pedestals, buildings, sculptures and various decorations of utensils in temples and grottoes. The most typical Dunhuang pattern is the essence of traditional Buddhist patterns. It is a unique artistic style created by skilled craftsmen in China by absorbing foreign cultures. These patterns are rigorous in composition and full of ideals. Third, the furnishings, daily necessities, costumes, jewelry and buildings occupied by feudal emperors, nobles and wealthy businessmen ... These handicraft patterns are carefully designed to meet the material life and empty spiritual life of luxury people, and there is no specialized workshop supervised by special personnel, so the patterns are very fine and colorful and luxurious. In addition to the traditional patterns mentioned above, there are quite a few decorative patterns with the theme of happiness, longevity, wealth, literati painting and calligraphy, and poetry. Most of them use meter, Jiugong and other metrical forms. The above three parts of patterns constitute the mainstream of Chinese traditional patterns.