My Neighbor's Brother Is Actually My University Professor

Ji Xiaomo and Wen Zhiyan met when they were young and had a carefree and happy time. The male protagonist suddenly chose to go abroad and slowly lost contact... Ji Xiaomo thought they would never meet again, but when she turned around, she met her neighbor Wen Zhiyan, whom she hadn't seen for many years in college. Later... She discovered that he also liked her, and a sweet love relationship began that got out of hand.