热心 (rè xīn): 열심인

Neighbor Aunt Zhang is very kind-hearted; she often helps the elderly who live alone buy groceries and pick up medicine.

He is especially enthusiastic about community events; he always volunteers to help set up the venue for every charity sale.

Thank you for being so warm-hearted in giving me directions and even walking me to the subway entrance.

The new colleague Xiao Wang is very helpful; as soon as lunch break comes, he orders food and picks up packages for everyone.

Several warm-hearted residents in the community organized a volunteer team that picks up trash in the park every Saturday.

He is enthusiastic about public welfare; not only does he donate money himself, but he also mobilizes his friends to sponsor students in need together.