What does it mean for a man to give a lady a fan?

1. In ancient times, there were no electric fans. In hot weather, use a banana fan or a paper fan. Sending a fan is a metaphor for sending someone cold. Later, it developed into a poet or lover writing poems on the fan, reciting each other's feelings, or as a souvenir of classmates' parting, with a feeling of mutual admiration or unforgettable. 2. Fan is homophonic with "goodness". As the saying goes, sending a fan can fan away the villain, which means to avoid misfortune. 3. There is also a saying that fans are also homophonic with "three", and they are only used in summer and abandoned in autumn when it is cold, which shows rudeness. There is a two-part allegorical saying, send a fan for three or nine days-ingratitude. I hope it doesn't mean that. I hope I can help you.