The first Manchu translations of Chinese works were the Liu-t'ao 六韜, Su-shu 素書 , and San-lueh 三略- all Chinese military texts dedicated to the arts of war due to the Manchu interests in the topic, like Sun-Tzu's work The Art of War.    The military related texts which were translated into Manchu from Chinese were translated by Dahai.  Manchu translations of Chinese texts included the Ming penal code and military texts were performed by Dahai.  These translations were requested of Dahai by Nurhaci.  The military text Wu-tzu was translated into Manchu along with Sun-Tzu's work The Art of War.  Chinese history, Chinese law, and Chinese military theory classical texts were translated into Manchu during the rule of Hong Taiji in Mukden with Manchus placing significance upon military and governance related Chinese texts.  A Manchu translation was made of the military themed Chinese novel Romance of the Three Kingdoms .   Chinese literature, military theory and legal texts were translated into Manchu by Dahai and Erdeni.  The translations were ordered in 1629.   The translation of the military texts San-lüeh, Su-shu, and the Ta Ming hui-tien (the Ming law) done by Dahai was ordered by Nurhaci.  While it was mainly administrative and ethical guidance which made up most of San-lüeh and Su Shu, military science was indeed found in the Liu-t'ao and Chinese military manuals were eagerly translated by the Manchus and the Manchus were also attracted to the military content in Romance of the Three Kingdoms which is why it was translated. 
It is an interesting secret, which emerges from the careful study of Catholic doctrine, as it has been articulated through the centuries. If we want to understand the Devil, that is the first place to look. The Church is the expert on demonic activity, having been in active competition with the infernal powers all this time. She is kept on her toes as their principal target. Until recently, she spoke with one clear voice, the words of Our Saviour, and indeed, were it not for divine assistance she would have succumbed to the satanic service, long long ago.