There Are a Lot of Systems Here

This ordinary world encountered a sudden crisis of engulfment. The entire planet was swallowed up by the apostle world in twelve areas. At the same time, all human beings controlled the power of the system sequence and jointly formed two lines of defense with flesh and blood to isolate the human world from the apostle world. This is how the protracted war between mankind and the apostles began. An internet-addicted boy from Earth travels back in time with an encyclopedia. How will he write his own legend? "Let me check, first-level Dao Protector Disciple, add Enlightenment Stone code to advance to Level 2 Dao Peeper, add Yin Chasing Grass, Sun Beast Eyeball Code, advance to Level 2 Onmyoji, eh? There is also a rare sequence?" The martial arts system and the knight system collide with fists and fists, and blood and energy burst out. The empire system and the barbarian system, thousands of troops and horses, were fighting fiercely in a head-on confrontation. The conceptual dispute between the sword immortal system and the magic system! Which one is stronger, the space battleship system or the void biological system? The strongest system, hundreds of stars shining. There are really many systems in this world...