Women make it in a man's world

Liu Hui spends more than 10 hours a day studying computer systems to analyze their programming and identify online security loopholes.

"I am very fond of information security. Finding a security risk and solving it gives me a huge sense of achievement," said Liu, 25, a PhD from Shanghai Jiao Tong University.

Liu, a native of the Inner Mongolia autonomous region, often gets surprised looks from people when they realize she is studying information security, as it is a specialty mostly taken up by men.