From a Wall Street Journal story by Chun Han Wong headlined “Xi Jinping’s Succession Problem—and China’s”:

During China’s last imperial dynasty, Qing emperors held court at the Palace of Heavenly Purity, an imposing edifice of red walls and yellow-glazed roof tiles deep inside Beijing’s Forbidden City. The monarch would consult courtiers and receive guests in the lavish main hall, still visible to tourists today, where his “dragon throne” sat on a dais decorated with intricate motifs. Above the seat of power hung a horizontal tablet that concealed the most sensitive of imperial secrets: the identity of the next emperor.