A young European heterosexual couple wore wedding attire to the Household Registration Office to notarize their marriage, and after completing the registration procedures, they were walking on their way home. At this time, another elderly heterosexual couple with white hair came on the opposite street. The young couple passed by the elderly couple and both sides turned back to look at each other. The young couple seemed to see their future, and the old couple seemed to see themselves when they were young, and both sides smiled knowingly at the same time. FHD, Rich in details, masterpiece