Why Was the Martial Arts System Issued in the Xianxia World?

Li Liannian traveled through time and came to a world of immortals. But what traveled with him turned out to be the martial arts system. 10 Points of chivalry can be redeemed to get started with Luoying Fei Foil Sword! 100 Points of chivalry can be redeemed to get started with the powerful Vajra Finger! Looking at these redemption options, Li Liannian frowned deeply. You must know that in this world of immortals, these so-called mortal methods, even if they are practiced to the extreme, are only innate realms. To put it simply, Kankan can be compared with the early stage of foundation building. I finally traveled through time once, and the golden finger I brought was so useless?