Depicts three leaves on branches of a tree. Remnant from the top part of 枼. Based on the original meaning "leaf", now written as 葉. The meaning later shifted to "generation", since leaves pile up in hundreds much like a generation.

Evolution

Bronze script

Early Western Zhou (~1000 BC)

Seal script

Shuowen (~100 AD)

Clerical script

Eastern Han dynasty (25-220 AD)

Regular script

Modern

 More