Wu Zixu
Yuan Kang's book listed various water crafts that were used for war, including one that was used primarily for ramming like Greco-Roman triremes. These "classes" of ships were the great wing (da yi), the little wing (xiao yi), the stomach striker (tu wei), the castle ship (lou chuan), and the bridge ship (qiao chuan). These were listed in the "Yuejueshu" as a written dialogue between King Helü of Wu (r. 514 BC–496 BC) and Wu Zixu (526 BC–484 BC). The Wu Kingdom's Navy is regarded as the origin of the first Chinese Navy which consisted of different ships for specific purposes. Wu Zixu stated: