《天工开物·下篇·佳兵》
其中硝石的阴性最强，硫黄的阳性最强，这两种神奇的阴阳物质在没有一点空隙的地方相遇，就会爆炸起来，不论人还是物都要魂飞魄散、粉身碎骨。
硝性至阴，硫性至阳，阴阳两神物相遇于无隙可容之中。其出也，人物膺之，魂散惊而魄齑粉。
Among them, saltpeter has the strongest yin, while sulfur has the strongest yang. When these two magical yin and yang substances meet in a place with no gaps, they will explode. Whether it is people or things, they will be blown to smithereens.