Nature is not random. It is remarkably, almost impossibly, precise. In The Hidden Code: Mathematics in Nature, I will explore the surprising ways that mathematics encodes the world around us, from the spirals of sunflower seeds to the fractals of snowflakes. This talk delves into the Fibonacci sequence and the golden ratio – how they influence the shape of petals, shells, and even the growth of trees. But the talk also leaves the audience with a philosophical question: is math something we invented, or something we discovered? As a student at Seoul International School, I have long been fascinated by the nature of mathematics. As well as mathematics in nature. Ever since I was young, I have wondered: is math something we invented to make sense of the world, or is it something that is inherently woven into nature? From the number of sunflower petals that match a particular sequence to the shape of snowflakes that form a perfect symmetry, nature seemed to be oddly related to math. I'm amazed by how the abstract ideas of math manifest so precisely in the physical world. In my talk, I hope to explore this connection further, and leave you wondering whether math is just a tool we use, or a hidden code embedded into the universe itself. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx