Postgrad's poisoning death raises questions(2)

Huang was also active on Sina Weibo, the Chinese equivalent of Twitter. His last post was made on March 13. Most of his posts now contain replies with message of condolence.

"Both my parent lost their jobs when I was in junior high school. My family borrowed heavily to pay for my mom's medical bills. I made up my mind to earn a living all by myself . Looking back at my five years at Fudan University, I can proudly say I've made it." Huang said in an 2010 speech delivered at a scholarship award ceremony.

Huang was also active in charitable causes. He volunteered to teach in southwest China's Tibetan Autonomous Region and encouraged impoverished local students to pursue their dreams.

Fudan University's website has adopted a black-and-white color scheme in memory of the promising medical student.