Chinese photographer Feng Jianguo attends the opening ceremony of his exhibition held in the Visual Arts Center of Tsinghua University in Beijing, capital of China, Oct. 13, 2011. The works of Chinese photographer Feng Jianguo were brought to the audience via the 8-day exhibition held in Tsinghua University. (Xinhua/Li Xin)

Two visitors look at a photo portrait of a Tibetan old man displayed at an exhibition held in the Visual Arts Center of Tsinghua University in Beijing, capital of China, Oct. 13, 2011. The works of Chinese photographer Feng Jianguo were brought to the audience via the 8-day exhibition held in Tsinghua University. (Xinhua/Li Xin)

A visitor looks at photo portraits of Tibetans displayed at an exhibition held in the Visual Arts Center of Tsinghua University in Beijing, capital of China, Oct. 13, 2011. The works of Chinese photographer Feng Jianguo were brought to the audience via the 8-day exhibition held in Tsinghua University. (Xinhua/Li Xin)

Visitors watch a documentary made by Chinese photographer Feng Jianguo at an exhibition held in the Visual Arts Center of Tsinghua University in Beijing, capital of China, Oct. 13, 2011. The works of Chinese photographer Feng Jianguo were brought to the audience via the 8-day exhibition held in Tsinghua University. (Xinhua/Li Xin)

A visitor takes pictures of photo portraits of Tibetans displayed at an exhibition held in the Visual Arts Center of Tsinghua University in Beijing, capital of China, Oct. 13, 2011. The works of Chinese photographer Feng Jianguo were brought to the audience via the 8-day exhibition held in Tsinghua University. (Xinhua/Li Xin)