一层 yīcéng layer Origin Definitions Defs Strokes Stroke Words Sentences Sents 更上一层楼 gèngshàngyīcénglóu to reach new heights To climb one story higher; figuratively used to describe achieving further progress, improvement, or a higher level of excellence.负一层 fùyīcéng basement level 1 the first floor below ground level in a building; floor B1