色 ㄙㄜ ˋ sè 厉 ㄌㄧ ˋ lì 内 ㄋㄟ ˋ nèi 荏 ㄖㄣ ˇ rěn 色 ㄙㄜ ˋ sè 厲 ㄌㄧ ˋ lì 內 ㄋㄟ ˋ nèi 荏 ㄖㄣ ˇ rěn lit. show strength while weak inside (idiom); appearing fierce while cowardly at heart a sheep in wolf's clothing