to a detachment of troops far in the distance. Another mention of the signal bomb appears in a text dating from 1293 requesting their collection from those still stored in Zhejiang. A signal gun appears in Korea by 1600. The Wu I Thu Phu Thung Chih or Illustrated Military Encyclopedia, written in 1791, depicts a signal gun in an illustration.

Transition

Chinese fireworks and other pyrotechnic technologies accompanied the spread of gunpowder to European countries. Countries like Italy and Germany

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