老油子 [－－－]

Jyutping lou5 jau4 zi2
Pinyin lǎo yóu zi

Definitions (CC-CEDICT)
  1. (coll.) wily old fox
  2. crafty fellow
Definitions (Wiktionary)
  1. noun, colloquial
    sophisticated person; wily old fox; crafty fellow
    (syn.) 老油条, 老油條