The Noble Female Is Highly Martial, and the Aloof Sister Wants to Monopolize Me!

This is a bizarre world of martial arts. After the age of fifteen, girls open up their martial arts veins and learn various magical techniques. But boys don't have martial arts, so they go into factories when they should, and marry when they should marry. Su Li traveled through time and was picked up by a cold-hearted lady who worked in comics, and unexpectedly got a copy of "Pure Yang Manual". Without knowing it, he cultivated a pure yang body, with unlimited physical strength and surging true power, becoming the only man with martial arts. Later, as he demonstrated his martial arts more and more often, his secret was finally discovered. However... "What? You said Xiaoli used her strong inner strength to heal your injuries? Oh, Xiaoli is a boy, and boys have no martial arts at all!" "The only swordsman in the world? What are you talking about? When Xiaoli is at home, she can't hold a kitchen knife firmly." "This punch requires at least thirty years of skill. It cannot be done without solid external skills. Do you think this boy with thin skin and tender flesh can do it?" … Su Li didn't understand why the eldest sister who lived with him didn't believe that he had martial arts skills? Obviously, he learned all his peerless martial arts from her. Until he discovered that his eldest sister had a second personality... "Don't mess around with others!"