and was also the founder of Trúc Lâm Yên Tử (竹林安子), a Vietnamese zen Buddhist sect. Thái Thượng Hoàng typically hold significant power and influence over the Imperial Court and the governing of the country, though it was not the case for the Revival Lê dynasty, as Trịnh lords held real governing power while the Emperor was only a figurehead, making the power of Retired Emperors even more insignificant. See also Minister Mentor Notes Titles Chinese royal titles History of Imperial China History of Japan History of Korea History of Vietnam Ancient Korean institutions