Visitors look at photos at an exhibition of World Press Photo 2012 in south China's Hong Kong, Oct. 8, 2012. The exhibition, as part of the 2012 Hong Kong International Photo Festival, will be held here from Oct. 7 to 21. World Press Photo (WPP) is one of the world's most prestigious press photo contests. The 167 award-winning journalistic images of World Press Photo 2012 will be exhibited in about 100 countries and regions including Hong Kong. (Xinhua/Zhang Lingling)

A visitor views photos at an exhibition of World Press Photo 2012 in south China's Hong Kong, Oct. 8, 2012. The exhibition, as part of the 2012 Hong Kong International Photo Festival, will be held here from Oct. 7 to 21. World Press Photo (WPP) is one of the world's most prestigious press photo contests. The 167 award-winning journalistic images of World Press Photo 2012 will be exhibited in about 100 countries and regions including Hong Kong. (Xinhua/Zhang Lingling)

A visitor views photos at an exhibition of World Press Photo 2012 in south China's Hong Kong, Oct. 8, 2012. The exhibition, as part of the 2012 Hong Kong International Photo Festival, will be held here from Oct. 7 to 21. World Press Photo (WPP) is one of the world's most prestigious press photo contests. The 167 award-winning journalistic images of World Press Photo 2012 will be exhibited in about 100 countries and regions including Hong Kong. (Xinhua/Zhang Lingling)

Visitors look at photos at an exhibition of World Press Photo 2012 in south China's Hong Kong, Oct. 8, 2012. The exhibition, as part of the 2012 Hong Kong International Photo Festival, will be held here from Oct. 7 to 21. World Press Photo (WPP) is one of the world's most prestigious press photo contests. The 167 award-winning journalistic images of World Press Photo 2012 will be exhibited in about 100 countries and regions including Hong Kong. (Xinhua/Zhang Lingling)

A visitor views photos at an exhibition of World Press Photo 2012 in south China's Hong Kong, Oct. 8, 2012. The exhibition, as part of the 2012 Hong Kong International Photo Festival, will be held here from Oct. 7 to 21. World Press Photo (WPP) is one of the world's most prestigious press photo contests. The 167 award-winning journalistic images of World Press Photo 2012 will be exhibited in about 100 countries and regions including Hong Kong. (Xinhua/Zhang Lingling)

A visitor views photos at an exhibition of World Press Photo 2012 in south China's Hong Kong, Oct. 8, 2012. The exhibition, as part of the 2012 Hong Kong International Photo Festival, will be held here from Oct. 7 to 21. World Press Photo (WPP) is one of the world's most prestigious press photo contests. The 167 award-winning journalistic images of World Press Photo 2012 will be exhibited in about 100 countries and regions including Hong Kong. (Xinhua/Zhang Lingling)