孟卯
The truce brought Pinya and Sagaing branches of the Myinsaing dynasty together for the first time since 1315. The two ruling houses may have been forced into the truce by an emerging threat in the north. The Shan state of Mong Mao ("Maw" in Burmese), led by Si Kefa (Tho Kho Bwa) had successfully waged a rebellion against the rapidly declining Mongol Empire, driving back three separate Mongol expeditions in 1342, 1346 and 1348. By 1355, the Mongols had given up any hope of regaining any control, and had to be satisfied with what they called submission by Mong Mao. The "submission", even if true, was nominal, and freed Mong Mao to concentrate their energy and aggression elsewhere. Si Kefa's first target was Sagaing, which directly south of Mong Mao. The Shan raids now forced Sagaing looking for a closer alliance with Pinya. In 1357/58, Queen Soe Min sent her pre-teen daughter Shin Saw Gyi to Kyawswa, who raised his half-cousin, once removed, to queen.