Sorry to hear you had a rough day, glad you’re feeling better. You don’t need to buy a house. But don’t you want a home on the surface?

I don’t remember the Xian pouch, but based on my memory of at least one other Xian item, my guess is that the answer is “no.”

You have another mandatory monster plague left that it sounds like you haven’t learned about yet. Keep exploring.

Have you talked to Erika?

If you’re on day 54 now then you’re going to finish before the time activated quest, which it seems like everybody does since they didn’t fix the timing issue when they got rid of the camping mechanic.