Liu Chunxia, a supporter of Xu Zhiyong, one of China's most prominent rights advocates, is detained by policemen while she gathers with other supporters nearby a court where Xu's trial is being held in Beijing January 22, 2014. When dozens of activists unfurled banners across the country last March and April calling for officials to disclose their assets, they did so at the urging of one of China's most prominent rights advocates, Xu Zhiyong. Xu, 40, stands trial on Wednesday on a charge of “gathering a crowd to disturb public order” punishable by up to five years in prison. His case will almost certainly spark fresh criticism from Western governments over Beijing's crackdown on dissent. (Photo by Kim Kyung-Hoon/Reuters)

A woman gets out from a hut made of ice cubes ahead of a cold endurance challenge in Changsha, Hunan province January 21, 2014. Four people took part in the challenge which requires them to stay inside 1-cubic-metre ice huts for 48 hours, local media reported. (Photo by Reuters/Stringer)

The casket of Ad van Antwerpen takes the last ride on a Harley Davidson motorcycle hearse towards the crematory in Bergen op Zoom, south-western Netherlands, Friday January 24, 2014. Van Antwerpen, who died at the age of 69 had a passion for motorcycles but never drove one because of epilepsy, “impossible to drive one when living, but possible on his last journey”, according to his son Vincent. The 1948 WLC Harley Davidson motorcycle was driven by Fred van Essen who operates a special funeral transport service. (Photo by Peter Dejong/AP Photo)

A handout picture taken during the Sochi 2014 Winter Olympic torch relay on January 22, 2014, and released by the Sochi 2014 Winter Olympics Organizing Committee shows a torchbearer jumping with an Olympic torch in the city of Rostov-on-Don, some 1,000 km (600 miles) south of Moscow. Russian torchbearers has started in October 2013 the history's longest Olympic torch relay ahead of Winter Games in Sochi, which will take the flame across the country through all 83 of its regions, including extreme locales such as Chukotka, the remote region in Russia's Far East, the turbulent North Caucasus, and even Russia's European exclave Kaliningrad. (Photo by AFP Photo/Sochi 2014 Organizing Committee)

Model Lindsey Wixson walks the runway during Jean Paul Gaultier show as part of Paris Fashion Week Haute Couture Spring/Summer 2014 on January 22, 2014 in Paris, France. (Photo by Pascal Le Segretain/Getty Images)

A woman carries her child in a basket as they board a train at a railway station in Nanjing, China, on January 21, 2014. (Photo by Reuters)

A plane of the Irish low cost company Ryanair flies in front of a rainbow over Rome on January 19, 2014. (Photo by Gabriel Bouys/AFP Photo)

Kindergarten children exercise in a playground at Tokyo's Mizuho kindergarten on January 20, 2014, on the day of Daikan, which is believed to be Japan's coldest day of the year. Some 500 children at the kindergarten play and exercise without shirts every day of the year to keep healthy. (Photo by Yoshikazu Tsuno/AFP Photo)

Paramilitary policemen shout as they lift a log during a winter training session at a base in Chaohu, Anhui province, China, on January 20, 2014. (Photo by Reuters/China Daily)

A model walks the runway during the Thom Browne Menswear Fall/Winter 2014-2015 show as part of Paris Fashion Week on January 19, 2014 in Paris, France. (Photo by Kristy Sparow/Gamma-Rapho via Getty Images)

A model presents a creation for Schiaparelli during the Haute Couture Spring-Summer 2014 collection show, on January 20, 2014 in Paris. (Photo by Francois Guillot/AFP Photo)

A dancer performs after the procession going from Sao Sebastiao dos Capuchinhos church to the Metropolitan Cathedral, during celebrations for the day of Saint Sebastian, Rio de Janeiro's Patron Saint, in Rio de Janeiro, Brazil on January 20, 2014. (Photo by Yasuyoshi Chiba/AFP Photo)

A model walks the runway during the Charlie Le Mindu show as part of Paris Fashion Week Haute Couture Spring/Summer 2014 on January 20, 2014 in Paris, France. (Photo by Kristy Sparow/Getty Images)

A person makes a "happy face" on a car window during a snow storm in New York, January 21, 2014. In New York, a storm alert was issue for noon (1700 GMT) Tuesday to 6:00 am (1100 GMT) Wednesday with as much as a foot (30 centimeters) forecast for the metropolitan region. (Photo by Emmanuel Dunand/AFP Photo)

Children stand next to a plane in the camp for displaced persons at the Mpoko airport in Bangui, on January 21, 2014, a day after the election of Catherine Samba-Panza as the new President of the Central African Republic. The European Union agreed on January 20 to send hundreds of troops to the Central African Republic in a rare joint military mission aimed at ending months of sectarian violence. Saying Europe was “deeply concerned by the extreme insecurity and instability” in the impoverished nation, EU foreign ministers gave “political approval” to the rapid deployment of a force expected to number between 400 and 600. (Photo by Issouf Sanogo/AFP Photo)

A picture shows the rising waters of the Garonne River in Toulouse on January 25, 2014 as an orange alert was issued in the Midi-Pyrénées with heavy rainfall and risk of flooding expected in the region. (Photo by Pascal Pavani/AFP Photo)

Russia's President Vladimir Putin (C) holds an ADS dual-medium amphibious assault rifle, which is equally accurate when fired underwater or on dry land, during a visit to an arms factory in the city ancient Russian city of Tula, some 119 km (120 miles) south of Moscow, on January 20, 2014. (Photo by Alexei Nikolsky/AFP Photo/RIA-Novosti)

Joey, the star of War Horse, during a photocall at the EDF Energy London Eye, to celebrate War Horse reaching its 2000th West End performance, on January 21, 2014. (Photo by Sean Dempsey/PA Wire)

Model Yomiko is pictured wearing a Magee coat and top and trousers by Lennon Courtney at the opening of Showcase, Ireland's Creative Expo 2014, on January 19, 2014. (Photo by Andres Poveda/PA Wire)

A pro-European integration protester uses a slingshot during clashes with police in Kiev January 20, 2014. Protesters clashed with riot police in the Ukrainian capital on Sunday after tough anti-protest legislation, which the political opposition says paves the way for a police state, was rushed through parliament last week. (Photo by Vasily Fedosenko/Reuters)

An artillery firing exercise is underway at a shooting range in Yeoncheon County, Gyeonggi Province, South Korea, 24 January 2014. South Korea's Defense Ministry on 24 January 2014 urged North Korea to prove sincerity through actions as an official response to an open letter from the North to the South calling for resolution and an end to intimidating military acts. (Photo by Yonhap South/EPA)

South Sudanese People Liberation Army (SPLA) soldier patrols in Malakal on January 21, 2014. (Photo by Harrison Ngethi/AFP Photo)

A bride and bridegroom pose with a street performer dressed as Spiderman in Plaza Mayor, Madrid, Spain, Monday, January 20, 2014. The couple were having more informal wedding photos taken by a photographer in the plaza. (Photo by Paul White/AP Photo)

An anti-government protester throws a Molotov cocktail during clashes with police on Hrushevskoho Street near Dynamo stadium in Kiev, Ukraine, on January 25, 2014. After two months of primarily peaceful anti-government protests in the city center, new laws meant to end the protest movement have sparked violent clashes in recent days. (Photo by Brendan Hoffman/Getty Images)

Anti-government protesters burn tires during clashes with police on Hrushevskoho Street in Kiev, on January 25, 2014. (Photo by Brendan Hoffman/Getty Images)

A mortally wounded supporter of Egypt's ousted Islamist president is evacuated as another wounded protester lies in the street during clashes with security forces in the Mohandiseen district of Cairo, on January 25, 2014. (Photo by Eman Helal/Associated Press)

Police officers use their batons against demonstrators during clashes following a protest in Santa Cruz de Tenerife in the Canary Islands, Spain, on January 25, 2014. The protest was targeted at Education Minister José Ignacio Wert, who was attending the inauguration of a cathedral and is unpopular for his education reforms. (Photo by Andres Gutierrez/Associated Press)

This handout photo released by Ukrainian Ministry of Internal Affairs shows burning members of the Ukrainian riot police due to the gasoline bombs hurled by anti-government protestors during the clashes in central Kiev, Ukraine, January 20, 2014. At least 61 people were admitted to hospital and 100 police officers wounded after violent clashes broke out when thousands marched on Kiev's streets to demonstrate against a recently passed anti-protest legislation. (Photo by Ukrainian Ministry of Internal Affairs/Anadolu Agency/Getty Images)

Protesters use fireworks during clashes with police in central Kiev, Ukraine, early Wednesday, January 22, 2014. Two people have died in clashes between protesters and police in the Ukrainian capital Wednesday, according to medics on the site, in a development that will likely escalate Ukraine's two month-long political crisis. (Photo by Sergei Grits/AP Photo)

Ukrainian riot policemen detain a bleeding protester following clashes between security forces and pro-EU demonstrators in central Kiev on January 22, 2014. Five activists were killed and 300 wounded in the Ukrainian capital Kiev in a day of intense clashes with security forces, the medical centre of the protest movement said. (Photo by Anatolii Boiko/AFP Photo)

An elderly woman walks from police officers as they block a street during unrest in central Kiev, Ukraine,Tuesday, January 21, 2014. Anti-government protesters have held their ground through a night of violent street clashes in the Ukrainian capital, despite police moving in to dismantle barricades erected in a street leading to government offices. Police attempted to move in on the protest camp early Tuesday, but faced fierce resistance from demonstrators who tossed fire bombs and stones in their direction. (Photo by Sergei Chuzavkov/AP Photo)

Robert Burck (L), also known as the original “Naked Cowboy”, performs in a snow storm on the streets of Times Square, New York January 21, 2014. A winter storm packing snow and Arctic cold slammed the northeastern United States on Tuesday, grounding 3,000 flights, shutting down governments and schools and making travel a potential nightmare for millions. Burck, who started performing in Times Square in 1998, claims to make up to $150,000 a year in tips alone. (Photo by Darren Ornitz/Reuters)

Brazilian singer Claudia Leitte plays with a soccer ball as she poses for photos at the Maracana stadium in Rio de Janeiro, Brazil, Thursday, January 23, 2014. Claudia Leitte will perform with Jennifer Lopez and rapper Pitbull the official song for the 2014 World Cup. Football's governing body didn't elaborate when the song, written and co-produced by Pitbull will be released. (Photo by Felipe Dana/AP Photo)

In this photo provided by the Indiana State Police, emergency crews work at the scene of a massive pileup involving more than 40 vehicles, many of them semitrailers, along Interstate 94 Thursday afternoon, January 23, 2014 near Michigan City, Ind. At least three were killed and more than 20 people were injured. (Photo by AP Photo/Indiana State Police)

A snowman stands on the beach with temperatures around freezing near Rudee inlet in Virginia Beach, Va., on January 23, 2014. (Photo by L. Todd Spencer/The Virginian-Pilot)

Workers remove waste from the river in Jakarta on January 23, 2014, a day after floods hits part of capital city. More than 30,000 Indonesians have fled their homes in the capital due to flooding that has left five dead, officials said, with people using rubber dinghies and wading through waist-deep water to reach safer ground. (Photo by Bay Ismoyo/AFP Photo)

An anti-terrorism demonstrator mimics death during a protest against a recent suicide bombing at Taverna du Liban, outside the presidential palace in Kabul, Afghanistan, on January 19, 2014. Taliban members attacked the Lebanese restaurant Friday, killing 21 people, 13 of them foreigners, in the deadliest massacre against Western civilians in the area since 2001. (Photo by Mauricio Lima/The New York Times)