樓換樓 [楼换楼]

Jyutping lau2 wun6 lau2
Pinyin lóu huàn lóu

Definitions (CC-CANTO)
  1. to exchange one's apartment to for another one (to sell and buy another one) [colloquial]
Definitions (粵典–words.hk)
  1. 語句
    賣​咗​一層​樓​之​後​，​用​嗰​筆​錢​去​買​另​一​層​樓
    to sell one's apartment and buy another one （in order to get a larger apartment or to cash in）.