Ming Shilu
In fall 1479, Thánh Tông led an army of 180,000 men marched westward, attacked Muang Phuan, Lan Xang and Nan. Luang Phabang was captured and the Laotian ruler Chakkaphat was killed. His forces pushed further to the upper Irrawaddy River, around Kengtung in modern-day Myanmar. In 1482 Momeik borrowed troops of Dai Viet to invade Hsenwi and Lan Na. By November 1484, his forces had withdrawn back to Dai Viet. According to the "Ming Shilu", in 1488 Burmese Ava embassy in China complained about Dai Viet’s incursion into its territory. In the next year (1489) the Ming court sent envoys to admonish Dai Viet to stop.