If I Kill the Soul Piercer at the Beginning, How Can the System Help Me?

I, Li Jianyin, am a sword fanatic. When he was dying, his body was invaded by the souls from another world. Fortunately, I have strong willpower and crushed the offender's soul to pieces. I also absorbed his knowledge and captured something called "The No. 1 Gun Repair System in Nine Heavens and Ten Earths". Good guy, I am a swordsman, how can this broken system be of any use? How about... Try cultivating swords and guns? Forget it, I always feel that special brews are troublesome. Um? Comes with a points mall? Looks good! ! ! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.