人去樓空 [ㄖㄣˊ ㄑㄩˋ ㄌㄡˊ ㄎㄨㄥ; ren2 qu4 lou2 kong1] people are gone, the tower is empty; cf Yellow Crane Tower 黄鹤楼, Tang poem by Cui Hao 崔顥, with theme the past will never return nostalgia for old friends ◄ ►