jiāngzǐyá
Jiang Ziya , partly mythical sage advisor to King Wen of Zhou 周文王[ZhōuWénwáng] and purported author of “Six Secret Strategic Teachings” 六韜|六韬[Liùtāo], one of the Seven Military Classics of ancient China 武經七書|武经七书[WǔjīngQīshū]
Not found in HSK word list
37255th most common word in books