Petals flow like tears, and lonely birds sing their sadness. Please tell me its advantages.

If you feel it, you can't shed tears, and it is naturally difficult for birds to understand people's sadness and not hate it. It is the poet himself who feels this way. In the turbulent years of An Shi Rebellion, the poet was killed several times and suffered setbacks repeatedly. Immersed in pain all day. These two poems vividly expressed the author's mood at that time.

Emotion is a lasting emotional state, which makes all other experiences and activities of people infected by emotions. It affects a person's whole behavior and life in a certain period of time. The ancients said, "Those who are worried see their worries, and those who are happy see their happiness" is a general description of the state of mind.

Once emotions are generated, people will be infected with certain emotional colors for a period of time. A happy person, in his view, flowers are smiling and birds are singing beautifully. On the contrary, people who are in a sad mood are disheartened and bored, and there seems to be a sense of helplessness in a beautiful moment. They usually turn a blind eye to what they like and remain indifferent for a while. Fear makes people feel "nervous" and "jittery". Therefore, the distinctive feature of tone is that there is no specific object. It is not a concrete experience of something, but a diffuse emotional state.