克俭克勤

Explanation: Gram: the ability. Both hard-working, but also thrifty. 　　Source: "Shang Yu desert": "Diligence Pradesh, Kejian at home." 　　Examples: Applicable to this wine, are advised Uncle, since henceforth, conscientious, ~, to pay the father Wang Quan in Taiwan. (Ming Feng Meng, "Awaken the common saying" Volume XVII)