real tilt hammers in order to hull rice; again, the device only functioned when the cart was moved forward and the wheels turned. The field mill lost its use in China sometime after the Later Zhao, but it was invented separately in Europe in 1580 by the Italian military engineer Pompeo Targone. It was featured in a treatise by the Italian engineer and writer Vittorio Zonca in 1607, and then in a Chinese book of 1627 (concerning European technology) that was compiled and translated by the German Jesuit polymath Johann Schreck (1576–1630) and the Ming Dynasty (1368–1644) Chinese author Wang Zheng (王徵 1571–1644), although by then it was considered by the Chinese to be an original Western contraption. Finery forge: In addition to accidental lumps of low-carbon wrought iron produced by excessive injected air in Chinese cupola furnaces, the ancient Chinese also created wrought iron by using the finery forge at least by the 2nd century BC, the earliest specimens of cast and pig iron fined into wrought iron and steel found at the early Han Dynasty (202 BC – 220 AD) site at Tieshengguo. Pigott speculates that the finery forge existed in the previous Warring States period (403–221 BC), due to the fact that there are wrought iron items from China dating to that period and there is no documented evidence of the bloomery ever being used in China. The fining process involved liquifying cast iron in a fining hearth and removing carbon from the molten cast iron through oxidation. Wagner writes that in addition to the Han Dynasty hearths believed to be fining hearths, there is also pictorial evidence of the fining hearth from a Shandong tomb mural dated 1st to 2nd century AD, as well as a hint of written evidence in the 4th century AD Daoist text Taiping Jing. Fire arrow: One of the earliest weaponized forms of gunpowder was the fire arrow which received its name from the translated Chinese term huǒjiàn (火箭), which literally means fire arrow. In China a 'fire arrow' referred to a gunpowder projectile consisting of a bag of incendiary gunpowder attached to the shaft of an arrow from the 9th century onward. Later on solid fuel rockets utilizing gunpowder were used to provide arrows with propulsive force and the term fire arrow became synonymous with rockets in the Chinese language. In other languages such as Sanskrit 'fire arrow' (agni astra)