(born-death dates unknown) a nobleman of the state of Wu during the Spring and Autumn period, also known as Yanling Jizi; famously admired for his wisdom, integrity, and for refusing the throne, he is also celebrated for his devotion to a friend after keeping a silent promise to gift his sword

to present a gift or pay tribute at a friend's grave to show loyalty or remembrance; derived from the story of 季札挂剑 jì​zhá​guà​jiàn