Hong Taiji (1592-1643), eighth son of Nurhaci 努尔哈赤[nǔ ěr hā chì], reigned 1626-1636 as Second Khan of Later Jin dynasty 后金[hòu jīn], then founded the Qing dynasty 大清[dà qīng] and reigned 1636-1643 as Emperor
"Duke Li of Wei Answering Emperor Taizong of Tang", military treatise attributed to Li Jing 李靖[lǐ jìng] and one of the Seven Military Classics of ancient China 武经七书[wǔ jīng qī shū]