C52 It Was like Falling into an Ice Cellar

Nan Yuming's face turned pale. A drop of sweat slid down his forehead and landed on his neck, causing him to feel an itch. He looked at Su Nuanqing, who had a calm expression on her face, and could not say anything for a long time.

What exactly did she want to say? It can't be the kind of meaning that I think it is