The Trịnh–Nguyễn War lasted from 1627 until eventually 1672. The Trịnh army staged a minimum of seven offensives, all of which did not seize Phú Xuân. For your time, starting in 1651, the Nguyễn on their own went about the offensive and attacked elements of Trịnh territory. The Trần dynasty https://vitnam45889.blogsumer.com/30443396/việt-nam-an-overview