The Tr?nh–Nguy?n War lasted from 1627 until finally 1672. The Tr?nh Military staged a minimum of 7 offensives, all of which didn't capture Phú Xuân. For the time, setting up in 1651, the Nguy?n themselves went to the offensive and attacked portions of Tr?nh territory.The Tr?n dynasty also adopted a unique approach to coach new emperors: every t