1, the poet himself, poets are mostly temperamental people, and their emotions are easily fluctuating and sentimental. You can't be a poet if you are indifferent to everything.
2. Poetry itself, people's secular desires determine the theme of poetry. Happiness, anger, worry, thinking, sadness, fear and surprise often cause sadness. Even if you are happy, you will be happy to the extreme and sad to the extreme.
Most poets are sentimental. They are very emotional and sensitive to people's emotions. Their feelings of misfortune, sadness and pain are easy for ordinary people to understand. They always want to pour out their depressed sadness, but they are afraid of bringing negative effects to others, so they try their best to suppress their rich emotions, but their works still reveal a touch of sadness.
The poet's soul is like a floating cloud in the vast sky. He has been looking for it all his life, looking for a star where he can put his soul and stop wandering. However, clouds and stars are always missed.
Sorrow always haunts the poet's soul.
As a poet, Wang Guangwei is also inevitably sad.