Jiu Long Jian (九龍箭)

Drawing of a Jiu Long Jian, from 'Wu Bei Zhi (《武備志》)'.

Jiu Long Jian (九龍箭, lit. 'Nine dragons arrow') is a simple iron handgonne that shoots nine poisoned darts. It is possibly related to Jiu Long Tong (九龍筒, lit. 'Nine dragons tube'), an early Ming period rocket launcher or dart gun.

A nine-barreled Chinese handgonne, possibly a Jiu Long Jian. (Source: liveauctioneers)