Fantasy Version of Doomsday, Starting with a Burning Life Span of 500 Years

The apocalypse breaks out, countless sects turn into scorched earth, the former king turns into the dust of time, science fiction and fantasy collide, monks and zombies duel, every war makes the world tremble. The mysterious boy hid in a large sect, practiced meditation for twenty years to inspire the mysterious system, and led thousands of monks to establish a new order on the scorched earth. Countless people paid the price with their lives, but there were people who insisted on guarding him and fought hard under the siege of zombies. Although my life is humble, I am willing to compete with God for the chance of life. Even if I die, I will have no regrets!