"This is a problem posed by the great mathematician Ke Li two hundred years ago, and over these two hundred years, many mathematicians have tried to solve it, but even after they've lost all their hair, no one has managed to solve it. Eventually, it was named the Ke Li Conjecture, one of the world's top ten most difficult mathematical problems."
When Xie Songyun was young, he also had delusions of solving this two hundred-year-old problem that no one could solve, but after spending ten years and losing most of his hair, he still couldn't solve it. In fact, he hasn't given up to this day and will still occasionally work on it.
For these mathematicians, their lifelong wish is to solve these unsolvable mathematical problems.
"Grandpa, what are you doing?"
Xie Zimo saw his own grandfather picking up the phone, preparing to make a call.
