The fourth weapon is renju arrow

The third weapon is the ripped-rock machine. This weapon is the past shells first prototype, at that time are equivalent to the missile force. He invented the tool, equipped with large stone above, and can throw far away the stone into the city, can be used to fight each other often allows scratch. Also can be in the two armies against as lethality great weapon in the instant disrupt the enemy's position. The medieval European battlefield use weapon was the ripped-rock machine, the reds back in jinggangshan and kuomintang war, they often use the ripped-rock machine, played the kuomintang army GuiKuLangHao.

The fourth weapon is renju arrow. Then on the battlefield with arrows, and only one, and launch a lu invented this arrow can continuous firing several teams, it would have had plenty of time to break the enemy, make the enemy's wits. Zhuge liang was in this arrow and winning the war. But now this technology has been forgotten.

Have a weapon, unfortunately not been used, this is also a human being to regret the things that plane. That year, lu use bamboo to create a bird, flying in the sky for three days and three nights don't come down, and produced the wood eagle, and driving wooden eagle flying in the sky, but was then his compatriot, when the great thinkers of a taunt, said he mozi invented things without any real value, still be inferior to manufacture a car wheels are useful that lu no will "aircraft" continue to meditate on, otherwise, the invention of aircraft is Chinese, a human invention plane is early 2000 years, there might even now, people can at any time anywhere fly up to the sky.