The Travels of Old Ruins was a long novel written by Wu Chengen, a novelist of the Ming Dynasty. It mainly described the adventures and experiences the author encountered when he traveled to famous mountains and rivers. From the author's point of view, the novel shows the social reality and the complexity of human nature at the end of China's feudal society through the description of the characters on the journey. The protagonist of the novel, Old Ruins, was a poor farmer who met a rich boy named Wang Sungongzi on his journey. The two of them traveled together to visit the famous mountains and rivers of their motherland. On their journey, they encountered all kinds of adventures, such as meeting immortals, monsters, kind-hearted villagers and loyal warriors. They had experienced many adventures and dangers together, and they had also experienced the beauty and evil of human nature together. The novel used the adventures of Old Ruins and the princes as the main thread, interweaving the stories and experiences of various characters to show the social reality and the complexity of human nature at the end of China's feudal society. There were many descriptions of natural scenery in the novel, but there were also many deep thoughts about human nature.