I Am a Dual Cultivator of Magic and Martial Arts in Blue Star and Kill Demons

300 Years ago, a meteorite fell from the sky outside the Blue Star, and a demon came to the world! Where did the mysterious human forbidden zone come from? The protagonist Xu Changsheng obtained the system in his dream. Since then, the situation between humans and demons has begun to be turbulent. Cult traitor! The battle to destroy the city! The fog is thick, what is the truth? Xu Changsheng: "System, how come you are as mentally retarded as artificial intelligence?" System: "..." Xu Changsheng: "Didn't you say that the first demon was killed?" Fire Demon: "..." Xu Changsheng: "Was Blue Star technology able to kill demons 300 years ago? Why has it not progressed at all after 300 years, but has regressed?" Blue Star senior executive: "..." Extraterritorial evil: "..." The war song of blood and tears ignited, and the enemy in the dark was ready to move. Demon: "If you leave this child alone, it will cause serious trouble in the future!" There is no time, the young man must undergo a transformation. Improve your strength and transform your soul! Sweep across the world, defeat cults, conquer restricted areas, and fight against evil spirits outside the territory! Xu Changsheng: "System, I'm going to die. I need to find a good family in my next life." System: "... Silly boy, you are wrong! You have been using it wrong all along. This is not how the system is used!" Xu Changsheng: "... Huh!??" The logic of the whole text is online, the enemy is powerful and the strategy is extremely high, the protagonist can only survive through the cracks, it is a cool novel for novices. The victors shed their blood, and the vanquished die! The road to becoming a god is long, Xu Changsheng. You may be the only one facing the end of the journey, but please believe that we are all here, always there!