夜里 Traditional form: 夜裡 Pinyin (reading): yèli Definitions: during the night at night nighttime Characters: 夜 - night, dark; under cover of night 里 - unit of distance equal to 0.5km; village; lane Traditional characters: 夜 - night, dark; under cover of night 裡 - unit of distance equal to 0.5km; village; lane