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A paramilitary policemen looks at passengers arriving at the Beijing Railway Station as migration for the annual Spring Festival begins in central Beijing, January 24, 2016. (Photo by Damir Sagolj/Reuters)

A paramilitary policemen looks at passengers arriving at the Beijing Railway Station as migration for the annual Spring Festival begins in central Beijing, January 24, 2016. (Photo by Damir Sagolj/Reuters)



Passengers say their good-byes at the Beijing Railway Station as migration for the annual Spring Festival begins in central Beijing, January 24, 2016. (Photo by Damir Sagolj/Reuters)

Passengers say their good-byes at the Beijing Railway Station as migration for the annual Spring Festival begins in central Beijing, January 24, 2016. (Photo by Damir Sagolj/Reuters)



A boy looks out from a train window at Beijing Railway station, China, January 23, 2016. According to traffic police, over 2.9 billion trips will be made around China during the 40-day Spring Festival travel rush, which started on January 24. (Photo by Reuters/Stringer)

A boy looks out from a train window at Beijing Railway station, China, January 23, 2016. According to traffic police, over 2.9 billion trips will be made around China during the 40-day Spring Festival travel rush, which started on January 24. (Photo by Reuters/Stringer)



Passengers walk at a railway station, in Nanjing, Jiangsu province, China, January 23, 2016. According to traffic police, over 2.9 billion trips will be made around China during the 40-day Spring Festival travel rush, which started on January 24. (Photo by Reuters/China Daily)

Passengers walk at a railway station, in Nanjing, Jiangsu province, China, January 23, 2016. According to traffic police, over 2.9 billion trips will be made around China during the 40-day Spring Festival travel rush, which started on January 24. (Photo by Reuters/China Daily)



Passengers walk against snow as they get off a train at a railway station in Qingrong, Shandong province, China, January 24, 2016. (Photo by Reuters/China Daily)

Passengers walk against snow as they get off a train at a railway station in Qingrong, Shandong province, China, January 24, 2016. (Photo by Reuters/China Daily)



Passengers wait for boarding at Beijing West Railway station, China, January 24, 2016. (Photo by Reuters/China Daily)

Passengers wait for boarding at Beijing West Railway station, China, January 24, 2016. (Photo by Reuters/China Daily)



A couple share a quilt at midnight at a railway station in Guangzhou, Guangdong province, January 25, 2016. According to traffic police, over 2.9 billion trips will be made around China during the 40-day Spring Festival travel rush started on January 24. (Photo by Reuters/China Daily)

A couple share a quilt at midnight at a railway station in Guangzhou, Guangdong province, January 25, 2016. According to traffic police, over 2.9 billion trips will be made around China during the 40-day Spring Festival travel rush started on January 24. (Photo by Reuters/China Daily)



A passenger sleeps on his baggage inside a train from Shanghai to Shijiazhuang at the station in Suzhou, China, January 27, 2016, after migration for the annual Chinese Lunar New Year and Spring Festival began. (Photo by Aly Song/Reuters)

A passenger sleeps on his baggage inside a train from Shanghai to Shijiazhuang at the station in Suzhou, China, January 27, 2016, after migration for the annual Chinese Lunar New Year and Spring Festival began. (Photo by Aly Song/Reuters)



Passengers are seen inside a train travelling from Shanghai to Shijiazhuang at the station in Wuxi, China, January 27, 2016, after migration for the annual Chinese Lunar New Year and Spring Festival began. (Photo by Aly Song/Reuters)

Passengers are seen inside a train travelling from Shanghai to Shijiazhuang at the station in Wuxi, China, January 27, 2016, after migration for the annual Chinese Lunar New Year and Spring Festival began. (Photo by Aly Song/Reuters)



Passengers are seen inside a train travelling from Shanghai to Shijiazhuang at the station in Wuxi, China, January 27, 2016, after the migration for the annual Chinese Lunar New Year and Spring Festival began. (Photo by Aly Song/Reuters)

Passengers are seen inside a train travelling from Shanghai to Shijiazhuang at the station in Wuxi, China, January 27, 2016, after the migration for the annual Chinese Lunar New Year and Spring Festival began. (Photo by Aly Song/Reuters)



A passenger looks from inside a train travelling from Shanghai to Shijiazhuang at the station in Wuxi after migration for the annual Chinese Lunar New Year and Spring Festival began. Picture taken January 27, 2016. (Photo by Aly Song/Reuters)

A passenger looks from inside a train travelling from Shanghai to Shijiazhuang at the station in Wuxi after migration for the annual Chinese Lunar New Year and Spring Festival began. Picture taken January 27, 2016. (Photo by Aly Song/Reuters)



Passengers travel on a train from Shanghai to Shijiazhuang after migration for the annual Chinese Lunar New Year and Spring Festival began. Picture taken January 27, 2016. (Photo by Aly Song/Reuters)

Passengers travel on a train from Shanghai to Shijiazhuang after migration for the annual Chinese Lunar New Year and Spring Festival began. Picture taken January 27, 2016. (Photo by Aly Song/Reuters)



Passengers travel on a train from Shanghai to Shijiazhuang after migration for the annual Chinese Lunar New Year and Spring Festival began. Picture taken January 27, 2016. (Photo by Aly Song/Reuters)

Passengers travel on a train from Shanghai to Shijiazhuang after migration for the annual Chinese Lunar New Year and Spring Festival began. Picture taken January 27, 2016. (Photo by Aly Song/Reuters)



A man carries food on a train travelling from Shanghai to Shijiazhuang after migration for the annual Chinese Lunar New Year and Spring Festival began. Picture taken January 27, 2016. (Photo by Aly Song/Reuters)

A man carries food on a train travelling from Shanghai to Shijiazhuang after migration for the annual Chinese Lunar New Year and Spring Festival began. Picture taken January 27, 2016. (Photo by Aly Song/Reuters)



A man carries a bag on his back in Guangzhou, Guangdong province, January 26, 2016. According to traffic police, over 2.9 billion trips will be made around China during the 40-day Spring Festival travel rush, which started on January 24. (Photo by Reuters/Stringer)

A man carries a bag on his back in Guangzhou, Guangdong province, January 26, 2016. According to traffic police, over 2.9 billion trips will be made around China during the 40-day Spring Festival travel rush, which started on January 24. (Photo by Reuters/Stringer)



A woman pulls her daughter in a trolley before taking their train to head to their hometown for the “Spring Festival” or Lunar New Year at Beijing Train Station on January 29, 2016. The Lunar New Year, this year being the Year of the Monkey on the Chinese zodiac, begins on February 8. (Photo by Fred Dufour/AFP Photo)

A woman pulls her daughter in a trolley before taking their train to head to their hometown for the “Spring Festival” or Lunar New Year at Beijing Train Station on January 29, 2016. The Lunar New Year, this year being the Year of the Monkey on the Chinese zodiac, begins on February 8. (Photo by Fred Dufour/AFP Photo)



A migrant worker looks out from a train at a railway station in Hangzhou, east China's Zhejiang province on January 22, 2016, as they travel home amid a yellow alert for cold weather in the province. Schools have been suspended and emergency workers put on standby in China as the country braces for historically cold weather, including 30-year lows in places, the government and state media said. (Photo by AFP Photo/Stringer)

A migrant worker looks out from a train at a railway station in Hangzhou, east China's Zhejiang province on January 22, 2016, as they travel home amid a yellow alert for cold weather in the province. Schools have been suspended and emergency workers put on standby in China as the country braces for historically cold weather, including 30-year lows in places, the government and state media said. (Photo by AFP Photo/Stringer)



Passengers wait to board their trains as they head to their hometowns for the Lunar New Year holiday, at Shanghai railway station in Shanghai on January 29, 2016. Over 2.9 billion trips will be made around China during the 40-day Spring Festival travel rush, which kicked off on January 24, Chinese authorities estimated. (Photo by Johannes Eisele/AFP Photo)

Passengers wait to board their trains as they head to their hometowns for the Lunar New Year holiday, at Shanghai railway station in Shanghai on January 29, 2016. Over 2.9 billion trips will be made around China during the 40-day Spring Festival travel rush, which kicked off on January 24, Chinese authorities estimated. (Photo by Johannes Eisele/AFP Photo)
30 Jan 2016 13:00:00