beijing

China Daily Life - Construction...BEIJING, CHINA - MARCH 29: Chinese workers eat lunch and rest at the site of a new subway line on March 29, 2014 in Beijing, China. The new line will be the 18th in the Beijing subway system, which has a daily ridership of more than 10 million people, according to local officials.

Kevin Frayer/Getty Images

Chinese workers break for lunch at the site of a new subway line in Beijing, China. The line will be the 18th in the Beijing subway system, which is used by more than 10m people a day, according to local officials.

US First Lady Michelle Obama (C) and Peng Liyuan, wife of Chinese President Xi Jinping are escorted by officials as they visit the Forbidden City in Beijing on March 21, 2014.  Michelle Obama arrived in Beijing with her mother and daughters to kick off a seven-day, three-city tour where she will focus on education and cultural exchange.

Andy Wong/AFP

US first lady Michelle Obama and Peng Liyuan, wife of Chinese president Xi Jinping, are escorted by officials as they visit the Forbidden City in Beijing on Friday. Mrs Obama arrived in Beijing with her mother and daughters to kick off a seven-day, three-city tour where she will focus on education and cultural exchange.

Honour guards parade before a welcoming ceremony for Saudi Crown Prince Salman bin Abdulaziz during a welcoming ceremony inside the Great Hall of the People on March 13, 2014 in Beijing, China. Saudi Crown Prince Salman bin Abdulaziz will pay a four-day state visit to China from March 13 to 16.  (Photo by Lintao Zhang/Getty Images)

Lintao Zhang/Getty Images

Honour guards parade before a welcoming ceremony for Saudi Crown Prince Salman bin Abdulaziz inside the Great Hall of the People in Beijing, China. The prince is on a four-day state visit to the country

Chinese security personnel march outside the Great Hall of the People where the closing ceremony of the Chinese People's Political Consultative Conference is held in Beijing, China, Wednesday, March 12, 2014. (AP Photo/Ng Han Guan)

Ng Han Guan/AP

Chinese security personnel march outside the Great Hall of the People where the closing ceremony of the Chinese People’s Political Consultative Conference was held in Beijing Read more

Girls wearing masks on haze-covered Tiananmen Square in Beijing.  China's National Meteorological Centre issued a "yellow" smog alert for much of the country's north, the fifth consecutive day of heavy pollution which has slashed visibility and seen pollution reach hazardous levels.

AFP

China’s National Meteorological Centre issued a “yellow” smog alert for much of the country’s north, the fifth consecutive day of heavy pollution that has cut visibility and seen pollution reach hazardous levels, affecting areas such as Tiananmen Square (above) in Beijing.

Soldiers march out of the Great Hall of the People before a welcome ceremony held by Chinese President Xi Jinping for visiting Pakistani President Mamnoon Hussain (both not seen), in Beijing, China, 19 February 2014. The Pakistani president is on an official visit in China; his first foreign trip since taking office.

Alexander F. Yuan/EPA

Soldiers march out of the Great Hall of the People, Beijing, China, before a welcome ceremony held by Chinese president Xi Jinping for visiting Pakistani president Mamnoon Hussain. Mr Hussain is on an official visit to China, his first foreign trip since taking office

A man holds a bouquet while waiting for his girlfriend as he is accompanied by his friend while standing under Chinese lanterns on Valentine's Day at the Happy Valley amusement park in Beijing February 14, 2014.  The amusement park held a kissing competition where about 100 couples competed by kissing in various poses and an iPhone 5S was presented to the winning couple.

Kim Kyung-Hoon/Reuters

Two men stand under Chinese lanterns on Valentine’s Day at the Happy Valley amusement park in Beijing. The park held a kissing competition where about 100 couples competed by kissing in various poses and an iPhone 5S was presented to the winning couple

A woman and a child are seen through an art installation in the shape of the horse at a snow covered park in Beijing...A woman and a child are seen through an art installation in the shape of the horse at a snow covered park in Beijing February 7, 2014. Beijing saw this year's first winter sown on Friday. REUTERS/Kim Kyung-Hoon

Kim Kyung-Hoon/Reuters

A woman and a child are seen through an art installation in the shape of the horse at a snow covered park in Beijing. Beijing saw this year’s first winter snow on Friday. Read more

Chinese visitors enjoy sledding and skat...Chinese visitors enjoy sledding and skating on the partially frozen Houhai Lake during the Lunar New Year holiday in Beijing on February 6, 2014. Beijing saw its warmest New Year's period in six decades with temperatures averaging 8 degree celcius above normal and with no snowfall yet to hit the city.

Marl Ralston/AFP

Visitors enjoy sledding and skating on the partially frozen Houhai Lake during the lunar new year holiday in Beijing. Beijing is seeing its warmest new year period in six decades with temperatures averaging 8 degrees centigrade above normal, with snowfall yet to hit the city. Read more

A Visitor passes the trees decorated with red lanterns at the Spring Festival Temple Fair for celebrating Chinese Lunar New Year of Horse at the Temple of Earth park on January 30, 2014 in Beijing, China. The Chinese Lunar New Year of Horse also known as the Spring Festival, which is based on the Lunisolar Chinese calendar, is celebrated from the first day of the first month of the lunar year and ends with Lantern Festival on the Fifteenth day.

Feng Li/Getty Images

Trees are decorated with red lanterns at the Spring Festival Temple Fair in celebration of the lunar new year at the Temple of Earth park in Beijing on Thursday