Chinese immigrant to Canada Jiang Guobing, who held two doctorate degrees from American and Canadian universities, ended his life by jumping off a freeway overpass in Toronto, Eastday.com reported Monday. Jiang's family believes he decided to end his life due to excessive pressure in seeking a job.

Born in 1962, Jiang entered the nuclear physics program at Tsinghua University in 1979 with the top science score of all students in n Hubei Province. In 1996, he attended Purdue University in the U.S., gaining a doctorate in nuclear physics to complement his master's degree from Tsinghua.

Jiang came back to China after graduating from Purdue in 2000, and immigrated to Canada the next year. In 2004, he received a doctorate in chemical industries from the University of Toronto.

Jiang left no letters to his wife Lu Cairong, who told journalists he likely committed suicide due to the heavy mental pressure he had been facing in finding a job.

Lu said her husband worked in an oil paint factory for more than six months, earning 5,000 Canadian dollars (35,000 yuan) when he first moved to Canada, which made him depressed and introverted.

In this spring, Jiang worked in a cooperative research program between the University of Toronto and Ryerson University, which is due to end this month. Jiang had been trying to find a new job, however, he didn't receive any responses; no interview chances or even no refusal letters, Lu said.

At 4:30 in the morning on July 21, Lu was woken up and told by police that her husband died from jumping off the traffic ramp on Don Mills Road and the 401 freeway.