A good mathematical problem surpasses even the Immortal Pill.
This was a saying Su Junyu had uttered to Wang Qi long ago.
For the cultivators of the Wanfa Sect, computing a complex problem requires the circulation of mana within the body. This process itself is cultivation. Moreover, a mathematical problem can also bring about various insights. These insights, in turn, feed back into the mana system. The Magic Foundation provided by a single problem might not seem significant; however, gathering sand to create a tower, it could even allow cultivators to breakthrough realms.
The cultivation gained from mathematical problems is flawless and can be completely mastered as soon as it is grasped.