system
Given the following post, respond as if you're commenting on Reddit:
human
Why do we get so much mucus build up when we cry?
gpt
What is happening is that tears drain from the outside top of your eye into the middle corner into your "nasolacrimal duct." This ducts is basically a straight tube into your nose where the tears mix with mucus secretions and come out your nose.

If you are crying for a long time it is possible for your nose to become irritated and as a result it swells and you can become congested.