On this day, 79 years ago, on May 18, 1946 (April 18, 1946 in the lunar calendar), the Kuomintang and the Communist Party reached the "Nanjing Agreement" on repairing the Huayuankou embankment. On May 18, 1946, the Kuomintang and the Communist Party reached an agreement in Nanjing to cooperate in repairing the Huayuankou embankment of the Yellow River. After the victory of the Anti-Japanese War, the National Government decided to repair the Huayuankou embankment and divert the Yellow River back to its old path, and set up a Yellow River breach re-blocking project bureau under the leadership of the Yellow River Water Conservancy Commission. However, the Yellow River bed below Huayuankou has been cut off for eight years. Due to various reasons, about 1/3 of the embankment has been damaged. About 400,000 farmers are cultivating here. Once the Yellow River returns to its old path, new disasters will inevitably be caused. On March 1, the Huayuankou project started, and negotiations between the Kuomintang and the Communist Party of China on this matter also began. Representatives from the Yellow River Water Conservancy Commission of the National Government and the General Administration of Rehabilitation and Relief of the Executive Yuan, representatives from the Hebei, Shandong and Bohai Regions of the Communist Party of China, and representatives of the United Nations Relief and Relief Administration participated in the negotiations. The position of the Communist Party of China has been simple and clear from the beginning: it strives to relieve the suffering of the people in the Yellow River flood area and agrees to return to the old path of blocking the Yellow River; However, in order to avoid causing new disasters, it is necessary to wait until the old embankment is repaired before blocking the mouth and releasing water. The Kuomintang side avoided the issue of restoring the embankment and emphasized the importance of blocking it. The central strength of the dispute between the two sides is the issue of date. The Kuomintang and the Communist Party of China began negotiations in late March, and reached the "Kaifeng Threat Agreement" and the "Heze Agreement" on April 7 and 15 respectively, agreeing that the closure of the dam and the restoration of the dam would be carried out simultaneously, and the date of closure of the dam would be determined according to the situation of the restoration of the dam; relocation fees will be paid by the Executive Yuan to relocated residents; Representatives of the Communist Party of China participated in the repair and prevention offices of Henan and Shandong provinces. The Kuomintang actually tried to complete the blockading project before the flood, and telegraphed the Engineering Bureau to speed up the construction and ensure that it was completed before July 1. In order to find a reasonable solution to the problem of blockages and embankments, the Jiefang District sent representatives to Nanjing in May and reached the "Nanjing Agreement" with the other party on the 18th. The two sides agreed to start the downstream embankment restoration project as soon as possible, the national government will allocate materials, labor and food funds as soon as possible, and the closure project will be based on the premise of not bringing water damage to the downstream.