Qi Ran parachuted back to China and stayed in the Chen family of his family friend. When chemistry became a stubborn weakness in her studies, Chen Yi, who had returned from her third year of Ph. D., Was entrusted by her mother with the important task of "tutoring her younger sister." Under the light of the study, he calmly analyzed the gains and losses of redox, while she worked hard to find the optimal solution among the molecular formulas. The dark blue wrong question book carries precise annotations, and also quietly hides the name she wrote unconsciously.
The distance is widened and the screen becomes the new study room. The late-night problem-solving pictures, the deep voice that spans thousands of miles, and the seemingly ordinary "good night" and "don't stay up too late" all form an invisible thread. He sent a handwritten note that condensed his hard work, and the instructions on the title page were restrained; behind the report card of her progress, there was a little expression of excitement hidden. The silent look at each other on New Year's Eve, the touch of fingertips that lingered before parting, the ripples in the heart lake have long transcended the boundaries between brother and sister.
Between the formula and the heartbeat, between the rational guidance and the quietly growing throbbing, a chemical reaction called "tacit understanding" was carried out slowly but firmly during those years of getting along day and night and watching thousands of miles away. No one said it clearly, but it had already grown quietly in each other's hearts.
Purpose: to fill those unspeakable regrets