system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If you put energy into a closed system to reduce its entropy, you will have increased the entropy outside of the system. How does that work?

I've heard that if you put energy into tidying a room to reduce its entropy, you will have increased the entropy outside of your room as a result?  Is that true?  If so, I don't get it.  I have tidied up a room and not caused rooms outside to get less tidy.

Edit:  Thanks for taking the time to answer.  Makes more sense now.
gpt
In order to clean your room, you had use some of your own energy. That energy ultimately came from plants (either directly by eating them or by animals which ate them). The plants gained their energy from the sun which is gradually increasing in entropy as it radiates its energy.

You need to look at the entire system, not just a small portion.