Yanto ask his friends to help him save his girlfriend that been kidnapped by a group of professional mobster.用黄(huáng )泥在(🗃)炉(lú )子的上方做了一个半封闭式的(de )容器，上(🗳)面留一(🎡)个口子用于加金属粉末使用(yòng )，下方也有一个口子，这个口子是让(ràng )金属粉末变成液(yè )体(tǐ )时，能够从(cóng )那里流出来。