It means that there are no patterns or words on the fan, only the red plain surface. The red plain surface of the fan refers to the plain surface without any patterns or words on the fan surface, only red. This kind of fan is made of red paper or silk and has a simple and simple aesthetic. In traditional Chinese culture, the fan is a very important cultural artwork and is used in dance, drama, calligraphy, painting and other fields. Fan red plain face is a form of fan that not only has practical value, but also has high artistic value.