The Sky-Dropping System Makes Me Invincible in a Strange World

The sky is cracked... A bloody giant eye appeared in the sky above the Sakura Kingdom, and the entire Sakura became a forbidden place of death. And this is just the beginning... Not long after, a flesh-and-blood creature as huge as a mountain appeared in the Northern Barbarian Empire, with twelve sky-covering blood wings on its back. The Northern Barbarians used a lot of equality of all beings and secret weapons to temporarily push back this unknown strangeness. Western Europe was invaded by a strange curse, and people began to turn into walking zombies... A bloody battlefield appeared in the Giant Bear Empire, and the sound of howling came from the battlefield, and those who heard it would die soon after. A huge, strange and mysterious ghost gate appeared in the Mang Mountain of Huaguo, and ghosts would run out of the gate from time to time. … The strange appearances in various places shocked people all over the world, and they realized that this world turned out to be a dangerous and strange world. More people died without even a chance to be shocked and frightened. Wang Jie, who received a strange delivery and got the system, volunteered to guard the ghost gate, slashed at the ghost gate, stared coldly at the ghosts coming out of the ghost gate and said: "Anyone who steps out of the ghost gate will be killed..." … "The gate of hell is so dangerous, why did he go to guard it alone? What kind of feelings made him choose to do this?" "What did he think?" "Sir, you are so righteous... We should work hard to protect our country." "..." Little did he know that he had a system that could make him stronger just by killing ghosts. Wang Jie thought: In such a dangerous world, of course you have to be invincible to feel safe. The introduction is weak, please read the text