哀平 Traditional form: 哀平 Pinyin (reading): Aī Píng Definitions: joint name for the Han dynasty emperors Aidi (reigned 7-1 BC) and Pingdi (reigned 1 BC - 6 AD) Characters: 哀 - sad, mournful, pitiful; to pity; to grieve 平 - flat, level, even; peaceful Traditional characters: 哀 - sad, mournful, pitiful; to pity; to grieve 平 - flat, level, even; peaceful