At the end of the Southern Song Dynasty, the Yuan army suppressed the territory. Zhou Yanshu, the son of a silversmith in the south of the Yangtze River, and Song Guan'er, an orphan girl from the embroidery workshop, locked their love with a silver longevity coin engraved with "See each other every year". In order to preserve the livelihood of his family and Guan'er in troubled times, Zhou Yanshu was forced to marry the daughter of the general who defended the city. On the day of the wedding, the city was ruined and the family was destroyed. The heartbroken Guan'er returned the longevity lock before escaping, and her life and death were unknown since then.
For ten years, Zhou Yanshu never gave up searching. When he finally found the clue, he learned that the beautiful woman had already passed away while wandering, leaving only the long-lasting lock and an unforgettable last word. This deep love and endless regret that spanned ten years, like a long-lasting lock, firmly locked his heart, telling the eternal tragedy of "lasting peace every year, never seeing each other again" among the ashes of the times and personal embers.
