It's fascinating what's really behind AI: mathematics, linear algebra, calculus, probability, optimization, information theory. They all power today's AI. But, something fascinating is happening in reverse. AI is now becoming a powerful tool for discovering and solving mathematics. So, if AI is changing mathematics, what does the future hold for mathematicians? On this, CGTN's Tian Wei spoke with 2026 Fields Medalist Yu Deng, one of the world's leading young mathematicians. He talked about how he works with AI, where mathematics can take us next and, perhaps most importantly, why this quite abstract science matters to all of us.