The imprisoned envoy pondered over this conundrum and its application and finally solved it. Sending to the king he said “You cannot get back the two districts by keeping me here. If you will let me go and will provide me with an escort I will induce the Sil-la government to restore the territory to you.” The king complied, but when the envoy had once gotten across the border he sent back word that the restoration of territory was not in his line of business and he must decline to discuss the question at the court of Sil-la. In 643 the powerful and much dreaded Hap So-mun sent to China asking the Emperor to send a teacher of the Shinto religion; for he said that the three religions, Buddhism, Taoism and Shintoism were like the three legs of a kettle, all necessary. The Emperor complied and sent a teacher, Suk-da, with eight others and with books to be used in the study of the new cult. The prowess of this Hap So-mun was well known at the Chinese court and it kept the Emperor from attempting any offensive operations. He said it would not do to drain China of her soldiers at such a critical time, but that the Mal-gal tribes must first be alienated from their fealty to Ko-gu-ryŭ and be induced to attack her northern border. Others advised that Hap So-mun be allowed free rein so that all suspicion of aggression on the part of China should be removed and Ko-gu-ryŭ would become careless of her defenses. This would in time bring a good opportunity to strike the decisive blow. It was in pursuance of this policy that the Shinto teachers were sent and that Hap So-mun’s creature, Chang, was given investiture. At the same time a Sil-la emmissary was on his way to the Chinese court asking for aid against Ko-gu-ryŭ. The Emperor could not comply but proposed three plans: first, that China stir up the Mal-gal tribes to harry the northern borders of Ko-gu-ryŭ and so relieve the strain on the south; second, that China give Sil-la a large number of red flags which she should use in battle. The Păk-je or Ko-gu-ryŭ forces, seeing these, would think that Sil-la had Chinese allies and would hasten to make peace; third, that China should send an expedition against Păk-je, which should unite with a Sil-la force and thus crush the Păk-je power once for all and join her territory to that of Sil-la. This would prepare the way for the subjugation of Ko-gu-ryŭ. But to this advice the Emperor added that so long as Sil-la had a woman on the throne she could not expect to undertake any large operations. She ought to put a man on the throne and then, after the war was over, restore the woman if she so wished. The Sil-la envoy pondered these three plans but could come to no decision. So the Emperor called him a fool and sent him away. We see behind each of these schemes a fear of Ko-gu-ryŭ. China was willing to do anything but meet the hardy soldiers of Ko-gu-ryŭ in the field.