What is the meaning of romantic sorrow in traditional Japanese culture?

"Romance" is a literary concept put forward by the great Japanese scholar of the Edo period, Honjue Xuanchou, and it can also be said to be his worldview. Simply put, it is a "true emotion", the emotion that naturally comes out of a person's heart when he or she touches the outside world, when he or she is touched by a scene, when he or she feels something, when he or she is moved by it, when he or she is touched by it, when he or she feels something, when he or she feels joy, anger, fear, sadness, a low and melodious voice, or a longing for a love. People who have such feelings, is to understand the "material sadness" of the people.