According to tradition, what is the name of the paper-cut posted on the window during the Spring Festival?

Window grilles are paper-cut pasted on window paper or window glass, which is one of the ancient traditional folk arts in China. It has a long history and unique style, and is deeply loved by people at home and abroad. Window grillage is a characteristic art of farming culture. The geographical environment of rural life, the characteristics of agricultural production and social customs also make this kind of local art have distinctive China folk taste and artistic characteristics.