At the Beginning, I Became an Alien

(For friends of Western fantasy, please read the second article.) Magic, superpowers, warriors, mechanics... Yu Tianmeng traveled to the original world. Various professions exist in the same world. The career path has been saturated. Can the alien profession open this path again? Alien beasts siege the city, legends abound, demons come to the world, ancient professions... With the help of the legendary necromancer, Yu Tianmeng became the first foreigner. So, where should he go? (It combines Eastern and Western fantasy, and the lonely knowledge in the book will be introduced, so it will not affect the reading experience.)