In the third year of his reign [512 BC ] Ho Lu , king of Wu , took the field with 子胥 Tzǔ-hsü [ i.e. 伍員 Wu Yüan ] and 伯嚭 Po Pʽei , and attacked Chʽu . He captured the town of 舒 Shu and slew the two prince’s sons who had formerly been generals of Wu