idiom · characterized by an icy, stern, or severe manner or attitude

面对大家的请求，他依旧态度冷若冰霜，没有商量的余地。

idiom · as cold as ice and frost, typically describing a woman who is unsmiling or unapproachable in appearance or personality

她虽然貌美，但性格冷若冰霜，很少有人能和她成为朋友。