I Work as a Civil Servant in the World of Cultivators

The protagonist is bound to a "immortal cultivation system", but something is wrong with this system—— Someone else's system posted a mission: "Kill the Nascent Soul stage monsters and reward them with heaven-level skills." His system released the task: "Congratulations on triggering the side mission [Monster Siege]. It is detected that the host's current combat power is 5, and the average combat power of the monster is 50,000. Warm reminder from the system: Run quickly." Other people's system stores: exercises, elixirs, artifacts. His system store: melon seeds, peanuts, small benches. The introduction says "immortal cultivation system", but the more the protagonist uses it, the more he feels that the core of this thing is actually a survival guide.