Hand fans have two general categories according to their shapes: 1. Flat fans (“平扇” pÇ ng shàn)(can not be folded): Circular fans, palm-leaf fans, straw fans, feather fans, and so on. 2. Folding ...

The first fan was probably a leaf, clasped by a human seeking relief on a prehistoric summer day. Today, on the rare occasions when modern air-conditioning fails us, we make do with theater programs, ...