知恩报德

Explanation: Know the people's favor by the people to return the favor. With Gratitude gratitude. " 　　Source: "Heroes triage" Red lotus touch body mind harmony with> "Kelian Jian Hunxiao we do, hard to repay her kindness mixed feelings. " 　　Examples: I repeatedly to help him, not quite hope he ~, as long as he has high aspirations to be a determined effort, I'll be satisfied.