Despite repeated setbacks, Bago still did not send in reinforcements even as Alaungpaya consolidated his gains throughout Upper Burma. On 3 January 1754, Konbaung forces retook Ava. Alaungpaya now received homage from the nearer Shan States as far north as Momeik. In March 1754, Hanthawaddy finally sent its entire army, laying siege to Ava and advancing up to Kyaukmyaung a few miles from Shwebo. Alaungpaya personally led the Konbaung counterattack and drove out the southern armies by May. Lower Burma (1755–1757) The conflict increasingly turned into an ethnic conflict between the Bamar north and the Mon south. The Hanthawaddy leadership escalated "self-defeating" policies of persecuting southern Bamars. They also executed the captive king of Taungoo in October 1754. Alaungpaya was only happy to exploit the situation, encouraging remaining Bamar troops to come over to him. Many did. Swelled by levies from throughout Upper Burma, including Shan, Kachin, and Kuki contingents, he launched a massive invasion of Lower Burma in a blitzkrieg in January 1755. By May, his armies had conquered the entire Irrawaddy Delta and captured Dagon, which he renamed Yangon. However, his advance came to a sudden halt at the French-defended main port city of Thanlyin, which repelled several Konbaung charges. Alaungpaya sought an alliance with the East India Company and also sought out more arms, but no alliance or arms materialized. Konbaung forces finally took the city after a 14-month siege in July 1756, ending the French intervention in the war. The Konbaung forces then overcame determined but vastly outnumbered Hanthawaddy defenses, and sacked Bago in May 1757. The 17-year-old kingdom was finished. Afterwards, Chiang Mai and other states in present-day northwest Thailand, which had been in revolt since 1727, promptly sent in tribute. In the south too, the governors of Mottama and Dawei also sent tribute. Farther Shan States (1758–1759) In 1758, Alaungpaya dispatched an expedition to the northern Shan and Tai states (present-day northern and eastern Kachin State, northern Shan State, and Xishuangbanna Dai Autonomous Prefecture) which had been annexed by the Qing since the mid-1730s. By early 1759, the Burmese had successfully reestablished their authority. A later Qing attempt to reconquer the region would lead to the Sino-Burmese War (1765–69).) Cape Negrais (1759) Alaungpaya then turned his attention to the East India Company (EIC) outpost at Cape Negrais at the southwestern tip of the Irrawaddy Delta. The British, concerned with the success of French-backed Hanthawaddy,