Before revision: In describing the drawn illustration of the flamethrower in the book, the Wujing Zongyao'' states: Then the text goes on to provide further instructions about equipment, maintenance, and repair of flamethrowers: big balls See also History of the Song dynasty Gunpowder warfare Technology of the Song dynasty Jiao Yu Battle of Tangdao Battle of Caishi Huolongjing, mid-14th-century Chinese military treatise.
After revision: In describing the drawn illustration of the flamethrower in the book, the Wujing Zongyao'' states: Then the text goes on to provide further instructions about equipment, maintenance, and repair of flamethrowers: Illustrations from the Wujing Zongyao See also History of the Song dynasty Gunpowder warfare Technology of the Song dynasty Jiao Yu Battle of Tangdao Battle of Caishi Huolongjing, mid-14th-century Chinese military treatise.