At last, about 1877, all the Sawbwas from Yawnghwè to Möng Löng were ordered to make a combined attack on Sang Hai. This was too much for the usurper. He went east of the Salween, and Naw Hpa was sent back to rule a ruined and distracted country. But Sang Hai before he retired had thrown his mantle over the shoulders of his son-in-law, San Ton Hon, who was for a Shan a good fighting-man. The unlucky Naw Hpa was driven out once more, and again ordered to Mandalay to explain his failure to hold his own. He knew by experience what this meant, and deputed his son, who was known as the Naw Möng, to represent him at Court, or rather in prison, while he himself took refuge with the Kachins. When Thebaw succeeded his father Mindon, he imprisoned his stepmother, the Hsenwi Queen, Naw Hpa's daughter, and killed her son. And as Naw Hpa himself was a refugee and Naw Möng was in jail San Ton Hon was left free to establish himself in Hsenwi, or rather in the Northern and Eastern Divisions of the State. The Southern, known as the Taunglet, had already broken away and separated into four petty chiefships. The middle portion, called the Alelet, was governed in a fashion by Sang Aw, commonly know as the Pa-ôk-Chok, who had his headquarters at Möngyai. A Burmese official with a small force had been left at Lashio, but unable to support himself against San Ton Hon he withdrew as soon as he heard of the fall of the Monarchy. On the British occupation of Mandalay the son of Naw Hpa, Naw Möng, who had been imprisoned by Thebaw, was set free. He made his way into Hsenwi, collected followers, and seized the capital, which had been evacuated by the Burmans. He was quickly expelled, however, by San Ton Hon. Meanwhile his father, Naw Hpa, with a following of Kachins, came upon the scene, and another element of strife appeared in the Myinzaing Prince, who had been imprisoned by the King and along with other political prisoners was released on the occupation of Mandalay. He made his way to the Shan hills and endeavoured to collect followers and oppose the British. His cause appears to have been taken up by Naw Hpa and Naw Möng, in the hope of strengthening their own party. A confederacy was formed to raise the standard of the Myinzaing Prince. The plan of campaign was to seize possession of this part of the Shan country. Hsipaw was to be assigned to Naw Möng, while Hsenwi was to be restored to Naw Hpa. The town of Hsipaw was attacked and completely wrecked, and a movement was directed against San Ton Hon.