Story of Chinese-Efforts of Inventors and Engineers

Gunpowder turns out to be invented unintentionally?How is the first seismological instrument in the world?Can the oldest single hole stone bridge in the world withstand the M7.6 earthquake?Except the four greatest inventions, are there any other remarkable inventions or projects? How much efforts have been made by inventors and engineers?This book tells the stories of 10 outstanding inventors and engineers in ancient and modern China. They are Lu Ban, Li Bing, Cai Lun, Zhang Heng, Zu Chongzhi, Li Chun, Bi Sheng, Wang Zhen, Zhan Tianyou and Yuan Longping as well as invention and rheology of the compass and gunpowder. Readers can learn the great achievements of China in the history of human civilization and contributions to the advancement of world civilization. Their fearless, dauntless and assiduous spirit is worth learning.