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In page Mangonel:
"West of China, the mangonel remained the primary siege weapon until the 12th century when it was replaced by the counterweight trebuchet.[14] In China the mangonel continued to be used until the counterweight trebuchet was introduced during the Mongol conquest of the Song dynasty. In 617 Li Mi (Sui dynasty) constructed 300 mangonels for his assault on Luoyang, in 621 Li Shimin did the same at Luoyang, and onward into the Song dynasty when in 1161, mangonels operated by Song dynasty soldiers fired bombs of lime and sulphur against the ships of the Jin dynasty navy during the Battle of Caishi.[15][16]
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