Zhou Yu and Shen Qinghe, childhood sweethearts, have been "competing" and accompanying each other for twenty years. From the children debating calculations under the banyan tree in the family courtyard, to the names next to each other on the middle school honor list; from the tacit late-night debugging in the university laboratory, to the partners who work side by side to overcome problems in the workplace - they have always been each other's strongest rivals, and they have always been each other's strongest support. When competition becomes a habit and tacit understanding goes deep into the bones, the love that has never been expressed in words is finally presented in the most unique way: "The system compatibility is perfect, apply to merge the code base." This is a story about how top academics use code to write romance and find the optimal solution to love in a logical world.