The Trịnh–Nguyễn War lasted from 1627 until 1672. The Trịnh army staged at the very least seven offensives, all of which failed to seize Phú Xuân. For a time, commencing in 1651, the Nguyễn by themselves went on the offensive and attacked portions of Trịnh territory.Its financial reforms considering the fact that the beginning of Đ�