When Lǐ Yǔpèi and his pirate crew stumble upon a hidden map leading to a parallel plane, they must solve the riddle of the Pythagorean theorem to find the treasure. This chapter delves into the mathematical mysteries of the parallel plane, testing their w...

In this math-adventure tale, a calculator's quest for the Golden Ratio leads it on a journey filled with mysteries, unexpected allies, and the revelation of an ancient secret that will change its understanding of numbers forever....