Which River Do You Come From?

Chen Nian traveled through time and returned to his seventeenth year old. In the last life, the person she liked died when she was eighteen years old. In this life, she not only wants to keep him alive, but also wants to be with him. But as fate would have it, she confessed her love again and again, but was rejected by him again and again. He was obviously attracted to her, but he didn't dare to get close. When she was seventeen, she said, "Duan Sijun, I like you." He gently touched her head, "Minors can't fall in love, don't you know?" She nodded obediently and quietly waited for herself to become an adult. At the age of eighteen, she said, "Duan Sijun, can I be your girlfriend?" He tilted his head and looked at her, "Friends last longer, let's just be friends." She wiped away her tears and pretended to be relaxed, "Then I will exercise my right to love as a friend." At the age of twenty-two, he said, "Nian Nian, I'm engaged." At the age of twenty-five, she said, "Duan Sijun, I'm married." When he was twenty-six years old, he suddenly brought a cute little girl with him, handed her a paternity test, and said to her, "Chen Niannian, this is our daughter. It is your and my daughter! I found someone to give birth to her for you."