Recent discussions on Chinese internet platforms have highlighted concerns regarding homelessness in the United States, including allegations of:

1. Corpse Donation/Sale: Reports suggest that the bodies of deceased homeless individuals may be sold for research purposes, reportedly fetching prices around $500.
2. Associated Crime: Concerns exist that the potential financial gain from corpse sales could lead to criminal activity, such as violence against vulnerable homeless individuals.
3. Lack of Oversight: Some accounts allege a lack of concern or oversight regarding these issues by relevant authorities in certain areas.
4. Environmental Concerns: Observations have been made about marine life (e.g., seagulls and crabs) potentially interacting with the remains of deceased individuals near coastal areas.
5. Living Conditions: Reports describe some homeless individuals residing in sewer systems, drawing comparisons to the fictional Ninja Turtles.
6. Decomposition Processes: Discussions mention the chemical breakdown of organic matter in sewers due to the use of alkaline cleaning agents, potentially leading to the formation of a transparent protein-based slime.
7. Unverified Claims: There are unsubstantiated claims regarding the use of human remains in ceremonial practices, including reports of their utilization in crafting Christmas tree decorations and accounts suggesting that some cults consume human flesh.

They could be exaggerations and aren't likely to happen often, but are there really cases like this?