"Strong men + strong women + long-term love + feelings of family and country"
The background of the work is the Republic of China period (not a historical text, the whole text is fictional)
A life-saving grace twenty years ago forged a life-and-death bond between the Tan and Zhang families - Tan Dezhong, the principal of Haicheng University Hall, and Zhang Fanglin, the marshal of Shanghai City, formed a sworn knot and agreed that if their children were of the opposite sex, they would get married together.
From a couple who concealed their identities to comrades who share life and death, they used their home and country as matchmakers, cast their souls with their blood, and opened a path to dawn in troubled times: "Guard the city of Shanghai, protect our home and country, and you and I will eventually meet again in the light."
