What are the four parts of Song of Eternal Sorrow according to the plot?

The first floor is from the emperor of China, who yearns for beauty, and may shake an empire. The emperor's eyes may never be enough to stare at her. The second floor is from the beginning to the war drums, which flourished and shocked the whole earth. Later, when he turned to look, the place of blood and tears, the third floor was from being hidden in a yellow dust blown by a cold wind to no one's dream. The fourth floor was in Lingqiong where a Taoist priest lived. He was a guest of heaven. Thank you. Please accept it.