Traveling Through the Era of High Martial Arts, Awakening Attribute Doubling System

[Invincible] + [No heroine] + [Young woman] + [Funny] + [Abstract plot] + [No procrastination] + [Decisive in killing] + [Travel time] + [Acting decisively], [Fast-paced and refreshing], [Crushing and pushing] Lin Feng took the system and traveled back to life twice. In this life, he and his sister depended on each other. While growing up, my elder sister was scolded and pointed at by handymen in the mortal world in order to protect her younger brother, and she even wanted to do something. My sister was almost bullied. At the critical moment, Lin Feng roared in his heart and shouted to the system, "Ding, the system has successfully updated and doubled the combat power. The system is at your service. Get the novice gift package." Since then, relying on various weird and unorthodox tasks issued by the system, he has counterattacked all the way, from being a handyman at the bottom of the mortal world to gradually reaching the top of the mortal world.