千金一诺

Explanation: Promise promise. The value of a promise to the daughter. Refers to keeping promises, not easily promise. 　　Source: "Biographies of Historical Ji Luan cloth" jin of gold, as was a promise quarter cloth. " 　　Examples: Drink a word, it turned out with gifts, but also afraid to sent thousands of miles, you really can be said to ~ carry on foreign workers. ★ Minglan Ling Xiao Xiao Sheng, "Jin Ping Mei," the 56th back