Warm Fragrant Jade summary:

Ling Qiyan, the eldest son of the emperor, a profilgate, uneducated, and the playboy of the capital. Later, he fell in love with a poor scholar, seduced him, and kicked him away after getting tired of him, accidentally cutting off his career path. Later, the poor scholar returned for revenge and replaced him as the eldest son of the emperor. It turned out that he, Ling Qiyan, was just the civet cat in the story of the civet cat replacing the prince. *Gloomy and cruel Gong x Heartless Shou