Chapter 548: Jiaojiao Is Jealous

."The power must be at least twice that of the gunpowder currently in use. After that, materials can be sought to wrap the gunpowder, which is then packed with steel balls. Once the fuse is lit and th...a furious lion, pacing restlessly in the room.Zhou Xingjia sat cross-legged in the corner of the room, looking at the broken teacup fragments before him. He sighed softly and said, "Your Highness, ple...