rè xīn
热心人
rèxīn rén
warm-hearted person / enthusiastic person
热心给大家办事
rèxīn gěi dàjiā bànshì
enthusiastically help everyone with their affairs
他对工会工作很热心。
Tā duì gōnghuì gōngzuò hěn rèxīn.
He is very enthusiastic about union work.