书评

In the Ming dynast, Zheng He's voyages were held which had proved our technology and power to the world. Our tech of sailing is in advance.Besides, compass is also invanted. The skills of produce of huge ships had been to perfect in that time. We have the abillity of observing the sky and stars. It's a treasure of Chinese people and the world. It also proved we have enough power to culture a plenty of soldiers. It's a symbol of the great power and bountiful source.And a lot of experience of sailing is recorded.