正颜厉色 zhèng yán lì sè

DEFINITIONS

  1. solemn in countenance (idiom); strict and unsmiling

CHARACTERS

正 zhèng right, proper, correct
颜 yán face, facial appearance
厉 lì whetstone; grind, sharpen; whet
色 sè color, tint, hue, shade; form, body; beauty, desire for beauty