[-]

Jyutping caat3 daan1
Pinyin shuā dān

Definitions (Wiktionary)
  1. verb
    to do click farming

刷單 [-单]

Jyutping
Pinyin shuā dān

Definitions (CC-CEDICT)
  1. to generate fake transactions in order to game a commercial online platform (one that rewards users who make numerous transactions)