The Trịnh–Nguyễn War lasted from 1627 right until 1672. The Trịnh army staged at the least 7 offensives, all of which did not capture Phú Xuân. For just a time, commencing in 1651, the Nguyễn them selves went within the offensive and attacked areas of Trịnh territory. This Site is https://vi-t-nam23567.isblog.net/gk88-options-48293877