According to the records of the History of Han Dynasty, Li Yannian, the courtier of Emperor Wu of Han, once sang a song in the banquet of the Emperor. The melody was very touching. The lyrics were “There’s a beauty in the north, who is incomparable and unworldly. With first glance, she overthrows the cities. With another glance, she overthrows the countries. Even so, no one wants to lose the chance to get the beauty!”

After hearing this, Emperor Wu of Han sighed, “Good ...