I Deliver Food in Heaven, Work Part-Time to Cultivate Immortality and Become Emperor of Heaven

A mortal deliveryman who was involved in a crime was "rehired" to heaven to continue delivering food after his death. He sent roasted sweet potatoes to the Jade Emperor and a VR game console to Sun Wukong. He relied on the wisdom of a mortal social animal to stand out in the fairy workplace. From a low-level laborer heavily in debt, he counterattacked all the way, and finally accidentally saved the Three Realms.