Yu's poem was a poem written by Yu Zishan, a poet of the Tang Dynasty. This poem was a lyrical way of describing Yu Zishan's longing for his wife, expressing his deep love for his wife and the grief of losing her. Yu Zishan's wife was the daughter of the famous poet of the Tang Dynasty, Wang Zhihuan. The two of them had been in love and married for many years. However, due to Yu Zishan's health, they had to be separated for a while. When Yu Zishan returned home, he found that his wife had passed away. He was so sad that he wrote this poem. The first two lines of Yu Shi's poem were: " Leaving you far away, the mountains and rivers are wide, and I miss you. When will I meet you again?" This sentence expressed Yu Zishan's longing for his wife. He thought that she and he were in different mountains and rivers, and he did not know when they would meet again. In the following poem, Yu Zishan described his memories of his wife. He described his wife's beauty and intelligence, as well as the good times they had together. He also expressed his deep love for his wife and his grief for losing her. In the poem, he wrote,"Missing you is like a full moon." In the end, Yu Zishan called for people to cherish the person in front of them and not give up easily. He expressed his good memories of his wife and the good times they had together. The entire poem expressed Yu Zishan's longing and reminiscence of his wife. It was very infectious.