急人之困

Explanation: Urgent: urgent solution, rescue. To save other people's difficulties 　　Usage: Verb-object type; as the predicate attribute; with compliment 　　Source: Qian Han, "Wei Gongzai Historical Biography": "win it for marriage from those attached to the son of the high-meaning, in order to anxious person in difficulty." Thesaurus:  Anxious, Willing to help