C23 Mo Dou's Coffin

It's a black coffin. This coffin is very special, it's not the kind of coffin we normally see, but I can tell it's a coffin with one glance because it's covered in ink lines …

I've seen my grandfather twine a Demon Bean Thread around a coffin like this. It must be a very fierce coffin. Whether it's a human or a ghost, we have to be very careful!" But now that I didn't have time to be cautious