Sub-Realm Star Marks

Magic has long ceased to be a miracle for the few. Constant temperature spells keep the city running, magic devices enter thousands of households, and giant teleporters shuttle through the sub-world, making continents tens of thousands of kilometers apart become close at hand. In this era where magic is highly popular, people have become accustomed to asking the sub-world for a response, but few people ask: Why does it respond? Xia Yubin, who went to study at Garou Central University of Magic, was just a freshman with mediocre theoretical scores and average magic power. The only thing that stands out about him is his almost demanding ability to control spells. A rare sub-world tide allowed him to get acquainted with Lin Yike, a freshman at the Sub-World Observation Institute; a most basic test of the magic hand made him accidentally join the research team on low-level magic. Starting from improving an insignificant magic node, he gradually discovered that the structure of the spells regarded as theorems by the world was not perfect, and the connection between magic and the sub-world was far more complicated than what was described in the textbook. Ten years of study, expensive tuition, college competition, magic patents, magic industry, and the unknown depths of the sub-realm all made up his college life. And the starting point of everything is just the simplest question: If all magic must pass through the sub-world, is it some kind of timeless rule that responds to humans, or is it a world that has not yet been understood?