The Trần dynasty also adopted a unique approach to train new emperors: each time a crown prince achieved the age of eighteen, his predecessor would abdicate and turn the throne above to him, but Keeping the title of Retired Emperor (Thái Thượng Hoàng), acting to be a mentor to the https://vitnam21986.blogdal.com/31441121/the-smart-trick-of-việt-nam-that-nobody-is-discussing