For a century and a half from 1228 the successors of Su-ka-pha appear to have ruled undisturbed over a small territory in Lakkimpur and Sibsagar districts.
Pha then formed a female counterpart of himself, who laid four eggs, from which were hatched four sons.
The Chinese annals speak of tribute paid to the empire by Pha-la on the north-east coast of the island as early as the 7th century, and later documents mention a Chinese colonization in the 15th century.
Under their king Su-ka-pha they invaded Assam from the East in the year A.D.
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