藏鋒 [－锋]

Jyutping cong4 fung1
Pinyin cáng fēng

Definitions (CC-CANTO)
  1. low profile; a diamond in the rough
Definitions (Wiktionary)
  1. verb, figuratively, formal
    to conceal one's brilliance
  2. verb, Chinese
    to hide the tip of the brush when writing a stroke