If Yu Duxiu understands that this so-called extramarital affair is what worldly desires said in his previous life.
Affection is joy, anger, sadness, fear, evil and love. External affection is eyes, ears, nose, tongue, body and mind. The pain caused by the burning of this flame belongs to external feelings, but to body and mind. "It’s too forgetful to cut off worldly desires. It’s really difficult for me to get through the present. […]