无动于衷 (wú dòng yú zhōng): Be completely indifferent (adjective/idiom) — Meaning & Stroke Order

How can you remain completely unmoved by such a touching movie plot?

The government has not been completely indifferent to the repeated appeals from environmental organizations.

Seeing the puppy injured, she walked away indifferently.

Even in the face of immense public pressure, he still remained unmoved and stuck to his own views.