黑飛 [－飞]

Jyutping hak1 fei1
Pinyin hēi fēi

Definitions (Wiktionary)
  1. verb
    to drive aerial vehicle without civil aviation authority's permission

黑飛 [－飞]

Jyutping
Pinyin hēi fēi

Definitions (CC-CEDICT)
  1. to fly illegally (of planes, drones etc)