Hook and cirrus moire

Hook cloud pattern is a kind of pattern. There are two kinds, one is the small gouyun pattern ground by the negative line, and the other is the gouyun pattern raised by the earth. Hook clouds connect the front and back sides and are densely arranged. These two kinds of gouyun patterns were popular from Warring States to Han Dynasty. After the Song Dynasty, the imitation gouyun pattern was bigger and more scattered.

Cirrus cloud is one of the traditional decorative patterns of Han nationality. One of the bronze decorative patterns. It started in the Warring States Period and was further developed in the Qin Dynasty. It was one of the popular decorative patterns in the Han and Wei Dynasties. With "W" and "×" as the basic lines, various curly cloud patterns are formed by contrasting techniques such as thickness, density, black and white and virtual reality.