“金兰”一词,在汉语词典中被解释为:原指牢固而融洽的友情(语本《易经·系辞》“二人同心,其利断金;同心之言,其臭如兰”)。在中国传统文化中,就有“义结金兰”之说,它既指异姓男子之间的结义,也指异姓女子情深义重的相交。“契”在 The term “Jinlan” is interpreted in the Chinese dictionary as referring to a solid and harmonious friendship (the word “Book of Changes” Such as blue “). In traditional Chinese culture, there is ”righteousness knot Jinlan“, which refers to both the righteousness of heterosexual men, but also refers to the surname of the surname of the profound friendship of the intersection. ”Contract " in