Reasons for Di Xin's lewdness: According to the TV series I watched since childhood, da ji had a fiance before he entered the palace, but because Wang Shangxin admired his beauty, he forced people into the palace, and there were many beautiful women in the harem. Historically, Di Xin, the king of Shang Dynasty, not only liked beautiful women, but also liked drinking. Therefore, there is a word in the idiom allusion specially designed for Di Xin, the Shang king, that is, "the meat forest in the wine pool", which introduces the scene where the Shang king puts wine in the bath and invites beautiful women to play in the wine pool. Not only that, everyone knows that the king is a famous tyrant and bad king in history; Love beauty more than Jiangshan, and have made great achievements in Jiangshan. Therefore, I think Di Xin of Shang Dynasty was a famous lecherous emperor in the history of China.
Reasons for Zhou Youwang's lewdness: Presumably, everyone knows an allusion, the famous idiom "Playing a vassal in a bonfire". In this allusion, it is recorded that Zhou Youwang lit a bonfire to attract all C's in order to win the smiling face of the beautiful woman. When the beautiful woman saw that C's had arrived foolishly, she smiled unconsciously. Therefore, Zhou Youwang thought that lighting a bonfire could win a beautiful woman's smile, and then lit it several times, completely ignoring that it was something that could be lit in an emergency. Finally, when the dog army attacked Haojing, they lit a bonfire here. All the princes thought that Zhou Youwang was laughing at Bomei. In the end, he died and his son succeeded to the throne.
Therefore, I think Zhou Youwang and Shang King Di Xin were the best emperors in the history of China, and they all died.