9. Continuity without breakage. – Xiang Lian Bu Duan - 相連不斷 In external martial arts, the power used is only physical strength and therefore there is a start and a finish to it. In between is the break where strength from the previous move is finished and before the new force is issued, which is the weakest point and can be easily exploited by the opponent. Taiji Quan uses yi and not li, hence the movements become continuous without ending like a roaring river without ceasing.