Back to the Seventies: Childhood Sweetheart or New Arrival?

[Alternate 1970s + Rebirth + Childhood Crush Comes True + Sweet Romance + Devoted Couple] In her previous life, Sheng Fanyue happily prepared her new marital home, unaware that the man she was supposed to marry only wanted to take advantage of her family's wealth. In the end, she leaped into the river, dying with resentment. When she opened her eyes again, she was back in the 1970s. This time, her parents were alive, and her older brother hadn't yet died in the line of duty. Realizing her brother was about to die, she immediately took her parents and set off to find him. But why was the boy who lived next door when she was a child always sticking so close to her...? Shen Yansheng felt as if he were dreaming. After all these years apart, he'd run into his childhood sweetheart on a green train. Seeing the sweet, delicate girl in the seat beside him filled his heart in an instant. What a coincidence. He really must be dreaming.