The Legend of the Condor Heroes: You Were Told to Kill Enemies, So You Slaughtered Song and Jin with One Sword

[Transmigration + System + Invincible + Emperor] Wang Chen transmigrates into The Legend of the Condor Heroes as a lowly soldier in the Song dynasty, otherwise known as cannon fodder! At this point, Guo Jing is still only eighteen, and the Song dynasty is still the same old place where the soldiers at the front fight for their lives while the emperor behind them surrenders... But nobody told Wang Chen that! He awakens the Kill Enemies for Rewards System and obtains the Nine Swords of Dugu, the Eighteen Dragon-Subduing Palms, Dragon-Elephant Wisdom Skill, heaven-defying comprehension, upgradeable traits, and more. He fights his way straight to the Jin imperial capital, only to find the dog emperor issuing twelve consecutive decrees ordering him to return? The System is so furious that it upgrades overnight into the [Myriad Worlds Emperor System for Killing Enemies]. Destroy the barbarians across the myriad worlds, claim the throne of emperor, and restore the prestige of Huaxia to earn true dragon energy and eternal life! From then on, he destroys Song and Jin in The Legend of the Condor Heroes, wipes out the Mongol Yuan in The Heaven Sword and Dragon Saber, and brings down the Liao in Demi-Gods and Semi-Devils...