買空賣空 [买－卖－]

Jyutping maai5 hung1 maai6 hung1
Pinyin mǎi kōng mài kōng

Definitions (CC-CEDICT)
  1. to speculate
  2. to play the market
  3. (fig.) to sell hot air
  4. to swindle people by posing as a reputable operator
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）