Apocalyptic All-elemental Mage

In the year 2020, a mysterious gate appeared in the sky, unleashing a zombie apocalypse. The world descended into chaos, order collapsed, and countless people fought madly, their flesh and blood flying everywhere. Xu Bai, by chance, became a magician and embarked on a journey to find his parents! President! Come get me some water! Beautiful lady! Come massage my shoulders! You! You! You! Go, guard the door!