Nasr also battled the native "Gold Teeth" people in Yunnan, and the Vietnamese during the Mongol invasion of Annam. Marco Polo had been wrong in claiming that Nasr had participated in the 1277 attack on Burma, Nasr fought in the 1284 invasion in reality. He was transferred to Shaanxi and appointed as its governor. Nasr al-Din's son Omar 烏馬兒 (Wu-ma-r) participated alongside him in the invasion of Annam (Vietnam).