结草衔环

Explanation: Old metaphor of gratitude, death did not forget. 　　Usage: Joint type; as predicate, object, attribute, adverbial; metaphor grateful, death did not forget 　　Source: Pre Hengyu "Zuo Venerable fifteen years": "and the Battle of auxiliary s, satellites to see the old knot grass Du Kang Hui, Tu and stumble back to Britain, so be it." 　　Examples: I Tianjia Zu ancestors on a BES, mischief are grateful to two God's grace, ~, will repay you two bits. (Qing Liu E, "Travels" Fourteenth back) Thesaurus:  bless pay a debt of gratitude