Fei Kong Hua Shui Shen You Guan (飛空滑水神油罐)

Drawing of Fei Kong Hua Shui Shen You Guan, from 'Wu Bei Zhi (《武備志》)'.

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Sheng You Yin Huo Che (盛油引火車)

Drawing of Sheng You Yin Huo Che, from 'Wu Bei Zhi (《武備志》)'.

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Xuan Feng Pao (旋風砲)

Drawing of a Xuan Feng Pao, from 'Wu Bei Zhi (《武備志》)'.

Xuan Feng Pao (旋風砲, lit. 'Whirlwind trebuchet') was a type of traction trebuchet first invented in China but later spread westwards to Middle East and Europe. It was a "single pole" type trebuchet with its axle and frame mounted on the top of a single pole.

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