案牍之劳

Explanation: Case of Du: documents. Tired of things for documents 　　Usage: Partial official; as object; tired of things that go through official documents 　　Source: Tang Liu Yuxi "Lou Shi Ming": "string and wind of chaos no ears, no case of Du form of labor." 　　Examples: Wutu Fortunately, no ~, and there is off-day retreat, climbing to Fu, the time of this peace? ★ Ming Li Zhen, "Chang recorded Night"