我是小农女

Well, it is indeed a special gunpowder that comes only from Qinxian City. This thing is also called black oil. It burns instantly, and after being dried and ground into powder, it becomes even more powerful. It's almost a hundred times more powerful than when it's wet. The vicious Immortal Demon Sect actually wanted to use this black gunpowder to deal with the Third Prince of Chu....