Another Chinese Fields Medal winner for 2026—Deng Yu—has recently been portrayed by netizens as the most 'alive' mathematician Looks like Huang Xuan, enjoys Baihe (GL) fanfiction, boldly shows off his self-made mugs in videos, and even got roasted by users on Zhihu. Beyond these contrasting labels, he studies incredibly complex problems: How the seemingly simple motion of ocean waves emerges from the interactions of countless wave packets; why trillions of gas particles colliding endlessly can form stable macroscopic patterns. To tackle the massive systems formed by repeated particle collisions, he and his collaborators introduced multi-layer graphs and cutting algorithms, rigorously deriving related dynamic equations to help people understand the macroscopic world through microscopic random movements. From a young Go prodigy and International Math Olympiad gold medalist to standing on the Fields Medal stage, Deng Yu has never turned himself into the stereotypical 'nerd.' He says he’s dreamed about math and admits that what truly keeps him in this field is the joy of seeing a plan finally work and solving a tough problem. Math is his all-out pursuit, but anime, poetry, Go, and gaming make up the vibrant and romantic other side of this top-tier mathematician.