乐于 (lè yú): To be willing to (Verb) — Meaning & Stroke Order

He is always willing to help others, so everyone likes him very much.

This kind old man is always willing to help his neighbors.

She is naturally kind-hearted and always willing to help those in need.

In his circle of friends, he earned the nickname "Warm-hearted" because he is always willing to help others.

Although he has a stubborn temperament, he is kind-hearted and always ready to help others.