Chang Lai Chang 'an is a famous poem by Lu You, a poet in the Song Dynasty. The whole poem praises the prosperity and tranquility of Xi 'an Chang 'an today and expresses the yearning for hometown. According to relevant public information, I often come to Chang 'an Middle School to describe Chang 'an's prosperity, happiness and elegance, profound and beautiful scenery, misty rain at the head of the city, long curtains, a pool of lotus flowers, spring scenery in thousands of streets, more fragrant and more affectionate, and peach and plum leaves have different colors all the time.