 The uneasy arrangement would persist until <unk> . The Mongols continued to occupy northern Burma to <unk> as the province of <unk> ( <unk> @-@ <unk> ) but ended the fictional central Burma province of <unk> on 18 August <unk> . Meanwhile , the power struggle in central Burma continued with the three brothers <unk> consolidating support . To check their rising power , <unk> submitted to the Mongols in January <unk> , and was recognized by the Yuan emperor <unk> Khan as King of Pagan on 20 March <unk> . The emperor also gave Chinese titles to the brothers as subordinates of <unk> . The brothers resented the new arrangement as it directly reduced their power . On 17 December <unk> , the three brothers <unk> <unk> , and founded the <unk> Kingdom . The <unk> forced the <unk> government to intervene again , leading to the second <unk> invasion of Burma ( 1300 – 01 ) . The invasion failed . Two years later , on 4 April <unk> , the Mongols abolished the province of <unk> ( <unk> @-@ <unk> ) , evacuated <unk> , and returned to <unk> . 
