Although Li Fan isn't exactly a mathematical prodigy, thanks to his photographic memory and relentless practice of various problems, his arithmetic skills have visibly improved without needing any system cheats.
He started with the "Four Elements Arithmetic Classic," laid his foundation with the "Ten Arithmetic Classics" given by Yao Xuanzhou, and is currently focusing on the hereditary textbook "Eighteen Flying Stars Calculation," which combines Lou Guandao arithmetic with stargazing.
With Li Fan's current level, if he were to take an arithmetic test at Xuanmen, he'd probably not have a chance, feeling grateful to even score a fifty out of a hundred. However, when he revisited the "Heavenly Harmony Divine Calculation" acquired from Wangwu Mountain, he could at least understand the questions now! Though he couldn't solve them, that in itself was a significant improvement!
