He deposed the ruling Lê monarch, Lê Cung Hoàng and made himself ruler of Đại Việt. In 1529, Nguyễn Kim who was a loyalist of the old royal family, went to Laos and submitted to the Laotian king Photisarath (r. 1520 – 1547). Photisarath granted for Nguyễn Kim administrator the territory of Xam Neua.
He replaced the reigning Lê monarch, Lê Cung Hoàng, with himself as ruler of Đại Việt. In 1529, Nguyễn Kim, a loyalist to the old royal family, went to Laos and submitted to King Photisarath (r. 1520 – 1547). Photisarath granted authority over Xam Neua to Nguyễn Kim.