洗樓 [－楼]

Jyutping sai2 lau4
Pinyin xǐ lóu

Definitions (Wiktionary)
  1. verb, Cantonese, literally, verb-object
    to clean a building
  2. verb, Cantonese, Hong-Kong, figuratively, in elections, verb-object
    to campaign for votes in the entire building

洗樓 [－楼]

Jyutping sai2 lau2
Pinyin xǐ lóu

Definitions (粵典–words.hk)
  1. 動詞
    去​一棟​大廈​逐家​逐户​派​傳單
    to hand out leaflet to every apartment in a building
  2. 動詞、黃賭毒
    去​一​啲​賣​淫業​蓬勃​嘅​大​廈​，​逐家​逐户​問價​錢
    to negotiate price with prostitute from apartment to apartment