The Seven Military Classics were seven important military texts of ancient China, which also included Sun-tzu's The Art of War. The texts were canonized under this name during the 11th century AD, and from the time of the Song dynasty, were included in most military leishu. Emperor Shenzong, the sixth emperor of the Song dynasty, determined which texts would be included in this anthology in 1080. For imperial officers, either some or all of the works were required reading to merit promotion, like the requirement for all bureaucrats to learn and know the work of Confucius. The Art of War was translated into Tangut with commentary.