Passengers place their luggages on train 3805 from Guangzhou, capital of south China's Guangdong Province, to Chongqing, southwest China, February 4, 2015. The 40-day travel frenzy known as "chunyun", the hectic period through the Chinese lunar New Year, or the Spring Festival, which falls on February 19 this year, began on Feb. 4 and will last until March 16. Train 3805 is the first chunyun train from Guangzhou. Photo: Xinhua 

Passengers rest at the waiting room before getting on train K5576 from Shanghai, east China, to Fuyang, east China's Anhui Province, February 4, 2015. The 40-day travel frenzy known as "chunyun", the hectic period through the Chinese lunar New Year, or the Spring Festival, which falls on Feb. 19 this year, began on February 4 and will last until March 16. Train K5576 is the first chunyun train from Shanghai. Photo: Xinhua

Passengers check in for train K5576 from Shanghai, east China, to Fuyang, east China's Anhui Province, February 4, 2015. The 40-day travel frenzy known as "chunyun", the hectic period through the Chinese lunar New Year, or the Spring Festival, which falls on February 19 this year, began on February 4 and will last until March 16. Train K5576 is the first chunyun train from Shanghai. Photo: Xinhua

A man walks on train K5612 from Hangzhou, capital of east China's Zhejiang Province, to Fuyang of east China's Anhui Province, February 4, 2015. The 40-day travel frenzy known as "chunyun", the hectic period through the Chinese lunar New Year, or the Spring Festival, which falls on February 19 this year, began on February 4 and will last until March 16. Train 5612 is the first chunyun train from Hangzhou.  Photo: Xinhua

Passengers wait for their trains at the Lanzhou Railway Station in Lanzhou, capital of northwest China's Gansu Province, February 4, 2015. The 40-day travel frenzy known as "chunyun", the hectic period through the Chinese lunar New Year, or the Spring Festival, which falls on February 19 this year, began on February 4 and will last until March 16. According to the Ministry of Transport, a total of 2.807 billion trips are expected to be made by Chinese people during the Spring Festival travel rush this year. The number, which excludes trips through public buses and taxi, is 3.4 percent higher than the previous year. Photo: Xinhua

Passengers check in at the Shijiazhuang Railway Station in Shijiazhuang, capital of north China's Hebei Province, February 4, 2015. The 40-day travel frenzy known as "chunyun", the hectic period through the Chinese lunar New Year, or the Spring Festival, which falls on February 19 this year, began on February 4 and will last until March 16. According to the Ministry of Transport, a total of 2.807 billion trips are expected to be made by Chinese people during the Spring Festival travel rush this year. The number, which excludes trips through public buses and taxi, is 3.4 percent higher than the previous year. Photo:  Xinhua

Passengers wait for checking in at the Hefei South Railway Station in Hefei, capital of east China's Anhui Province, February 4, 2015. The 40-day travel frenzy known as "chunyun", the hectic period through the Chinese lunar New Year, or the Spring Festival, which falls on February 19 this year, began on February 4 and will last until March 16. According to the Ministry of Transport, a total of 2.807 billion trips are expected to be made by Chinese people during the Spring Festival travel rush this year. The number, which excludes trips through public buses and taxi, is 3.4 percent higher than the previous year. Photo: Xinhua

Children look out of train 3805 from Guangzhou, capital of south China's Guangdong Province, to Chongqing, southwest China, February 4, 2015. The 40-day travel frenzy known as "chunyun", the hectic period through the Chinese lunar New Year, or the Spring Festival, which falls on February 19 this year, began on February 4 and will last until March 16. Train 3805 is the first chunyun train from Guangzhou.  Photo: Xinhua

A staff member leads passengers to train K4076 at the Shenzhen Railway Station in Shenzhen, south China's Guangdong Province, February 4, 2015. The 40-day travel frenzy known as "chunyun", the hectic period through the Chinese lunar New Year, or the Spring Festival, which falls on Feb. 19 this year, began on February 4 and will last until March 16. Train K4076 from Shenzhen to Chengdu, capital of southwest China's Sichuan Province, was the first chunyun train from Shenzhen. Photo: Xinhua

Drivers confirm departure signal through gestures on train 3805 from Guangzhou, capital of south China's Guangdong Province, to Chongqing, southwest China, February 4, 2015. The 40-day travel frenzy known as "chunyun", the hectic period through the Chinese lunar New Year, or the Spring Festival, which falls on February 19 this year, began on Feb. 4 and will last until March 16. Train 3805 is the first chunyun train from Guangzhou. Photo:  Xinhua