At the end of the year Mau Than 1788, taking advantage of King Le Chieu Thong’s act of “rước voi về dày mả tổ” (act of those who betray their country and their own people), King Qianlong issued an edict directly setting out a strategic direction for Ton Si Nghi to thoroughly take advantage of the contradictions in our country to carry out his ambition of invasion “Now, although Le Duy Ky has to go into exile, his entire family is not yet lost. As long as the people in the country still love the Le family, there is still a reason to prevail. So let You station troops at the border and far away to create a reputation for relief. Then told Duy Ky to summon the insurgents and conquer the capital city, but we don’t need to mobilize soldiers to help with the hard work, effort, and money. When they take the capital, You will bring troops to escort Duy Ky back to the country. If self-respect cannot do the job and the Tay Son is still arrogant, then You will bring troops and take the opportunity to take over the Southern country and bring soldiers to question the crime”

 Materials: King Qianlong’s edict to Ton Si Nghi – Hoang Le Nhat Thong Chi