The Trịnh–Nguyễn War lasted from 1627 until finally 1672. The Trịnh army staged a minimum of seven offensives, all of which didn't seize Phú Xuân. For just a time, setting up in 1651, the Nguyễn them selves went to the offensive and attacked aspects of Trịnh territory. The Cham folks, https://vi-t-nam26788.thezenweb.com/5-simple-techniques-for-việt-nam-68953068