| 干 gàn |
| to do ; trunk |
| 干活 gàn huó |
| 主干 zhǔ gàn | |
It originally indicated a primeval weapon made up of a fork of a fork of tree branch, which can spear a wild animal or an enemy. In ancient books, it also indicated a shield, e.g. the idiom 大动干戈, massive use of weapons. It is also the simplified version of 乾 and 幹. |