 With the constant insecurity in the presence of the Koreans, Meng and his followers migrated westward, settling in May 1411 in Fengzhou, in the valley of the Hoifa river, an affluent of the Sunggari river, where the Jianzhou guard under Šigiyanu (Li Xianzhong) was located.Here the Ming government would establish the Jianzhou Left Guard from the existing Jianzhou guard with Möngke Temür as the regional commander of the new guard.During this time, the Yongle Emperor began frequently sending expeditionary forces towards the Mongols, Möngke Temür and his followers would take part in one such expedition in 1422.