나무위키�?백과사전�?아니�?검증되지 않았거나, 편향적이거나, 잘못�?서술�?있을 �?있습니다. The Trần dynasty also adopted a singular strategy to practice new emperors: any time a crown prince attained the age of 18, his predecessor would abdicate and turn the throne in excess of to him, still holding the title of Retired Emperor (Thái Thượng Hoàng), https://662353208.win-blog.com/11281158/a-secret-weapon-for-việt-nam