高调的疯子低调的流氓
[gāo diào de fēng zi dī diào de liú máng]
'Loud crazy, quiet thug.' An unconventional mix of personalities: presenting boldly unconventional behavior openly but also maintaining hidden mischievous side less known to the public. May refer to someone embracing nonconformity while still observing some level of social conduct rules within certain bounds.