Diao Dao (吊搗)

Ming Dynasty Medieval Wrecking Ball
Drawing of a Diao Niao, from 'Wu Bei Zhi (《武備志》)'.
Diao Dao (吊搗, lit. 'Hanging thrasher') is a weapon designed to be used in siege defence. A large grappling hook hung from a wooden crane, Diao Dao resembles a smaller and mechanically simpler version of the famous ancient Greek Claw of Archimedes. Instead of pulling enemy warships out of the water like the Claw, it is used to turn over battering rams and siege towers.

A variant of Diao Dao replaces its grappling hook with a heavy stone ball, essentially turning it into a wrecking ball.

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