My Understanding Is so Monstrous That the Big Guys Are Panicking

Xu Yuan traveled through troubled times and became the lowest-level tenant. Awakening of incredible understanding: photographic memory, understanding by analogy! Learn martial arts secretly, become proficient in it instantly, and even improve it! Make a breakthrough on the spot during the battle and become stronger the more you fight! Create your own skills and establish a sect! He looks low-key on the surface, but actually controls the overall situation! Start by secretly learning the boxing skills from the nursing school; Go to the martial arts gym and become famous; Then he crushed everyone in the martial arts examination; In the end... One person controls a city, and one palm determines the world! When the royal family recruits, the sects win over, and the aristocratic families kneel to beg, Xu Yuan just smiled faintly: "I'm just a lucky tenant." [The whole process is exciting and cruel-free, the protagonist's IQ is online, and he kills decisively]