firmness cloaked beneath gentleness;an iron hand in a velvet glove ? 這個人～，不好對付。This man has an iron hand in a velvet glove and is not easy to deal with.
柔中有剛
firm but gentle
柔中有剛
iron fist in a velvet glove;gentle but firm;firmness cloaked beneath gentleness
柔中有剛róu zhōnɡ yǒu ɡānɡ
形容溫柔之中有剛強。firm but gentle, an iron hand in a velvet glove, firmness cloaked beneath gentleness