Classification of algae wells

According to its square well structure and central pattern, it can be divided into five categories: ① Square well nested caisson: it is a relic of the Northern Dynasty's flush pattern, and the square well nested frame structure has to be preserved, but the pattern in the well has changed. (2) Pan-stem lotus algae well: It is a unique algae well in Sui Dynasty, characterized by an eight-petal lotus in the well, and the stems and vines wrapped around the lotus are honeysuckle patterns, which tend to be natural. Outside the well, there are three decorative patterns: round beaded pattern, gold and silver pattern and white beaded pattern, as well as a long, large and exquisite triangular curtain. Sui Dynasty's caisson works have no programming, novel images, diverse ways, different thoughts and wonders. (3) Flying lotus algae well: the well is wide, and some flying flowers are painted around the big lotus. This kind of algae well decoration has gone beyond the space of the cave room, giving people a feeling of looking up to the vast space. (4) Shuanglong Lotus Algae Well: Two dragons playing with pearls are painted on both sides of the lotus in the well center, and sixteen flying flowers are painted around the Algae Well, which echoes inside and outside and has a strong sense of movement. ⑤ Da Lian algae well: Only one big lotus flower is painted in the well, or four corners are even matched with a horn flower, and there are many layers of decorations outside the well, which is simple and fresh. Unique decorative part of indoor ceiling in traditional Han architecture. Generally, it is made into a square, polygonal or circular concave well-shaped bulge, which is decorated with various patterns, carvings and paintings. Mostly used in palaces, temples, thrones and the most important parts above the Buddhist altar. The earliest existing wooden caisson is the caisson on Guanyin Pavilion of Dule Temple in Jixian County, which was built in 984. It is a square with four corners removed and an eight-bucket (the top of an eight-pyramid composed of eight corner beams) added. The Panlong algae well in the Taihe Hall of the Forbidden City in Beijing is a round well in the octagonal well, in which a carved Panlong hangs its head and holds a pearl, named Longjing, which is the most luxurious algae well in Qing architecture.