Your Majesty, the Queen Has Gone to Investigate the Case Again.

That day Li Heng knew that Mu Qing was leaving, so he chased him out and shouted: "Mu Qing!" Mu Qing turned around: "What's wrong?" "Mu Qing." I am Mu Qing. ... After a long time, Mu Qing looked at Li Heng at the bottom of the steps and said, "Do you know how to solve it?" Li Heng said to everyone in the world: "Shang Qing." I will marry you. ... In the 21st year of Jiaqing, the Feng Dynasty was destroyed, and the army conquered Kyoto. In the first year of Yuanxing's founding, it was first called the Yuanfeng Dynasty, and all the hatred began here. Flesh and flesh, human heads, female corpses... The mysteries behind them are revealed one by one, and each one hides everyone's hatred. If it can be solved, what solution should be used? Dual identity/Line of light and dark, extreme reversal/Secret history of the imperial palace/Previous and present dynasties, compose a song of everlasting regret heard by Lin Yu and scattered by Xihe. (Note: The copy referenced in the article will indicate the source. This article refers to the time, place, and background of Mr. Bai Juyi's "Song of Everlasting Sorrow" to illustrate the case.)