Chapter 72 of Water Margins mainly told the story of the two leaders of Liangshan Lake, Song Jiang and Lu Junyi, who were placed under house arrest by the imperial court after being recruited. In the novel, Song Jiang and Lu Junyi were placed under house arrest in Yanqing Brothel, and the room they lived in was called Yuzhao Brothel. During this period, the other heroes of Liangshan Lake came to Yanqing Brothel to communicate with Song Jiang and Lu Junyi. In the Jade Light Tower, the heroes of Liangshan Lake discussed the pros and cons of amnesty and finally decided to support Song Jiang's amnesty proposal. At the same time, they also discussed how to deal with the court's pursuers and how to protect Song Jiang and Lu Junyi's safety. In the end, the brave men of Liangshan Lake decided to act at night in an attempt to lure the pursuers of the imperial court out of Swallow Mountain and lead them into the interior of Liangshan Lake to achieve the goal of appeasement. However, their specific plan was discovered by the court's pursuers and was eventually suppressed by the court. In the novel, this plot showed the courage, resourcefulness, and loyalty of the heroes in Liangshan Lake, and also revealed the darkness and corruption of the imperial court.