Classic poems describing long-term friendship include:
1. There are returning guests in Dongting, and old friends in Xiaoxiang. ——Liu Yun's "Jiangnan Song"
2. Old friends are invisible, but new knowledge is thousands of miles away. ——Wen Tianxiang's "Dragon Boat Festival"
3. Where to meet? Climb Baochai Tower and visit Tongque Terrace. ——Liu Kezhuang's "Qinyuanchun·Meng Furuo"
4. After ten years of separation, we meet again when we grow up. ——Li Yi "Happy to see my brother-in-law but say goodbye"
5. After the sad old friend passed away, the new poems were left out in the cold. ——Li "Han Gong Chun·Plum"
6. Passing through Luoyang Mo before, there are few old friends in Wanluo. ——Wang Wei "Send off Li Taishou of Wei County to take office"
7. Suddenly I remembered my old friend Tianji, and planned to go to Liangzhou today. ——Bai Juyi's "Drunken Recollections of Yuanjiu with Li Shiyi"
8. The place where Bashan overlaps. ——Zhang Xian's "The Fisherman's Ao and Cheng Gong's Gift"
9. I want to find fragrant grass, but I regret not going against my old friend. - Meng Haoran's "Leave Farewell to the King to Serve Yu Wei"
10. The windy branches frighten the dark magpies, and the dew grass covers the cold eggs. ——Dai Shulun's "A Collection of Puppetry with Old Friends on a Guest Night"
11. Who would have thought that wine on the river would lead to friendship with old friends. ——Zhou Zizhi's "Linjiang Immortal·Send Off Guangzhou Zengjun"
12. I asked after it had passed, and I saw that we were old friends.
——-Wu Weiye "Meeting Old Friends"