The hospital has now called police to try to evict Sheng - but he has welcomed the police involvement and asked them to investigate.
"I'm not leaving," he said. "I'm worried that if I go out for even half an hour, the hospital will claim I had the tattoo done outside.
"But even if I wanted a tattoo, I wouldn't want those characters and I wouldn't want it on that part of my body."
The hospital staff blames the marks on a possible allergic reaction. Link -via Dave Barry