The Training Space of Top Students

"I love learning, but does learning love me?" After voicing this existential question, Lin Ye found himself in a mysterious cultivation space. [Please learn and solve the following addition and subtraction problems within ten. After completion, you may leave this space, and your mathematical ability will be greatly improved.] Lin Ye: Who are you looking down on? And so, Lin Ye began to frequently enter the cultivation space. Each time, the difficulty of the problems he needed to solve increased, but with each solution came generous rewards. "Prove the Pythagorean theorem? This isn't difficult enough." "Solve this elliptic curve problem? This is even worse than the competition problems I did!" "Solve this non-homogeneous linear differential equation? Do you still think I'm just an ordinary high school student?" "Complete a paper at the level of a core journal? You… you're starting to cause trouble…"