Alastair Macleod 
Eternal Blue Sky 

Shock and Awe, the Mongol way of conquest and their love of fluid continuous war, are stemmed for a moment, not by the Great Wall but by the precepts of Buddhism, Confucianism and the settled organised minds of the Han Chinese.

Kublai Khan, first Mongol Emperor of China, finds his own impulses for revenge put to the challenge as he deals with his younger brother.