I did a search on that awhile ago thinking it might be something they do. I don’t know about soup (there is a fake photo that makes the rounds), but I did read a long article about warehouses with dead “infants” where the parts are used in folk medicine and rituals. I’m guessing the “infants” was a bad translation of fetus - but...
The bodies were from all over the world. Thailand was the biggest user of them.
I did a search too, but it doesn’t look like a fetus, it looks actually like a real baby, I’ll freepmail you the site as I don’t want to post it in the open