墨迹未干

Explanation: Writing ink has not dried. Just signed an agreement or covenant metaphor soon (more for accused each other of breach of promise.) 　　Source: Tong Xiaopeng, "Chairman Mao to the Chongqing", "Double Ten Agreement," the ink was dry, the KMT army to attack the Liberated Areas and the Central China Liberated Area Shanxi-I. " 　　Examples: "Double Ten Agreement," the ~, the KMT army to attack the Liberated Areas and the Central China Liberated Area Shanxi-I. (Tong Xiaopeng "Chairman Mao to the Chongqing")