I Wrote It Myself, Why Can't I Use It?

Others travel with systems, but I travel with the modifier I wrote. Chen Fan said that there is nothing more exciting than this. Is the technique difficult to practice? One click to reach full level. Is it difficult to break through the realm? Automatic breakthrough. The villain is too strong? Steal home after detouring through map navigation. Martial arts geniuses who are once in a century, saints of sects inherited from ancient times, all are mobile experience packs in front of my self-made plug-in. The leader of Black Wind Village: "I have been practicing for thirty years, and I will kill you today!" Chen Fan: "Oh." (He filled up "Black Wind Gang Qi" casually and hacked him to death) The leader of the Blood Evil Hall: "I have perfected the Blood Evil Divine Art and am invincible in the world!" Chen Fan: "Oh." (He randomly clicked on the "Blood Shadow Magic" and hacked him to death) Leader of the Demonic Cult: "I am the Supreme Demonic Dao, destroying the heaven and the earth!" Chen Fan: "Oh." (He casually filled up the "Heavenly Demon's Heart Technique" and hacked him to death) The villains collapsed: "You're cheating! You don't follow martial ethics!" Chen Fan dug his ears: "Nonsense, I wrote it myself, why can't I use it?"