What kind of China red is commonly used in the doors and windows of Beijing quadrangles?

The quadrangle has window lattice, which is the frame structure of traditional wooden buildings in China and one of the most important elements in traditional buildings.

In the structural design of traditional wooden buildings, windows are one of the most important elements in traditional buildings and also the aesthetic center of buildings. In architecture, there are many kinds of windows, and there are also many decorations for windows. Different forms of windows have different names. Window lattice is a carving skill on doors and windows, and it is a traditional skill formed by China craftsmen for thousands of years. China ancient window carving techniques can be divided into relief and through carving, and then some are inserted and some are inserted. It uses many complicated technologies.