The invasions toppled Change_of_leadership the 250-year-old Pagan Empire , and the Mongol army seized Pagan territories in present-day Dehong , Yunnan and northern Burma to Tagaung .

Two dry season campaigns ( 1283–85 ) later , the Mongols had occupied Control down to Tagaung and Hanlin , forcing the Burmese king to flee Escaping to Lower Burma .

They may not have reached Arriving Pagan , and even if they did , after having suffered Bodily_harm heavy casualties , they returned Arriving to Tagaung .