The immediate cause of departure was the aggression of Su - Khan - Pha of Mong Mao .
According to this version , Sukaphaa 's father had earlier divided his Mong among his three sons , and Sukaphaa became the ruler of Mong Mit about 1209 .
The immediate cause of departure was the aggression of Mong               .
According to this version , Sukaphaa 's father had earlier divided his Mong among his three sons , and Sukaphaa became the ruler of Mong Mit about 1209 .