Rhapsody from Another World as I Wrote

This book is also called: "I am about to graduate, you want me to save the world?" In the Jiuxiao Continent, in the first year of the Federation 7891, Xie Yicheng, a modern and aspiring young man born and raised in the Land of Abundance. I am enjoying the decadent life in a technical school day after day. He was worried about the employment problem after graduation, but he didn't know that the spiritual energy of the world he was in was about to recover, and the crisis was gradually coming... Xie Yicheng: I am about to go to the cafeteria to eat after class. What is this zombie wave? [No system + spiritual energy recovery + fantasy + adventure + no knife + no brain + cool writing + Long Aotian + zombies + growth flow + multiple protagonists + fun jokes...]