, Chʽin and Han dynasties.” 69 The two most shameless offenders in this respect are Wu Chʽi and Huai-nan Tzǔ , both of them important historical personages in their day. The former lived only a century after the alleged date of Sun Tzǔ , and his death is known to have taken place in 381 BC . It was to him, according to Liu Hsiang , that 曾申 Tsêng Shên delivered the Tso Chuan , which had been entrusted to him by its author.