The Anshi rebellion, the fall of the Central Plains, the fall of the two capitals, the national peril, and the loss of life. Du Fu suffered a lot in this catastrophe. First, he was captured by rebels and imprisoned in Chang 'an. Then he fled to Tang Suzong to serve his country. In the end, he was humiliated and exiled because of his loyalty and integrity. During this period, Du Fu ran around, wandering from one place to another, hearing and witnessing the disaster and pain brought by the war.
Du Fu saw that the mountains and rivers were still broken, and the country was ruined. Although spring returns, the city is desolate. Du Fu, who has experienced adversity, is even more homesick and can't help feeling deeply, writing this longing for spring. Expressed patriotism.