Concern increases over students' mental health.
Every morning students hurry to classes and laboratories at Fudan University's medical school in Shanghai. As they pass in front of the dormitory, they slow to examine rows of origami cranes hanging on the college grounds.
The thousands of white paper cranes were made by students in memory of Huang Yang, a postgraduate medical student who died from multiple organ failure on April 16, two weeks after drinking water laced with N-nitrosodimethylamine, a highly toxic chemical that is often found in cosmetics and cleansing agents and that causes liver damage.
Huang's roommate, surnamed Lin, has been arrested on suspicion of murder, according to the prosecutor in Shanghai. Police claim the 27-year-old held a grudge against Huang over a trivial matter and deliberately poisoned him by taking the chemical from a university lab and putting it in their dormitory water dispenser.
Lin, from Shantou in Guangdong province, is outstanding academically, but introverted and shy about speaking in public, according to people who know him.
Huang's parents have been devastated by the news. "They cannot believe their son was poisoned, apparently over a trivial matter," said Wang Zhiwei, a classmate at Rongxian High School in Sichuan province who has been staying with Huang's parents.
"His mother is distraught with grief; she can't speak, she just keeps crying. She's heartbroken that her son died in circumstances such as this," said Wang.
Huang was the only child of an underprivileged family. Neither of his parents had a full-time job.
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