 Sima Qian states that, after Sima Rangju's death, King Wei of Qi (r.356-320 BC) compiled all of the most famous military writings then extant in Qi, of which the writings of Sima Rangju were a major component.According to Sima Qian, the resulting book was the "Methods of the Sima".Another view, promoted by modern scholars such as Liu Yin, was that the core material present in "the Methods of the Sima" was created during the reign of Duke Huan of Qi (r.685-643 BC), successfully guiding Duke Huan in his efforts to become a regional hegemon (霸).