Poker cards
How do you kill the boring long travel time in the limited space of a train? Playing card games is the most-common choice for passengers.
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 A man plays card games with his son in a train heading from eastern Yantai city to Guangzhou city on Jan 10, 2012. [Photo by Zhou Jian/CFP]  | 
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 A passenger plays a card game in a train heading from Shanghai to the southwestern city of Chengdu on Jan 15, 2012. [Photo by Liu Yuyang/CFP]  | 
