The fan is a special cultural phenomenon in China. Historically, the literati like to inscribe poems and paintings on the fan, to express their feelings.
In ancient times, the fan was sometimes seen as a symbol of official position. Probably because most ancient officials were literati, and literati often carried a fan with them, and often held a fan in various occasions to greet.
The Chinese word for fan is “fan” and “goodness”. Fan also means “goodness” and “good deeds”. Therefore, ancient people often hung fans indoors.