I found it, but the treasure chest appears open and cannot be interacted with，how can I get？I don't want to start a new save file again.
are you sure it's the right chest? I need to see the pic
This
that'a the wrong chest, they moved it to somewhere else, new part of the map iirc.
Thank you
But is it over there? North of the underground sewer?
uhh no, I believe it's placed at stratum 2, you know the hill/high ground, there's a new map there
OK，thank you
This