Paramilitary policemen carry tyres as they take part in a training session in Zhangye, Gansu Province, China, March 1, 2016. (Photo by Reuters/Stringer)

Boys play with a drainage culvert used for flood control in Las Pinas, Metro Manila February 28, 2016. (Photo by Erik De Castro/Reuters)

A woman peels potatoes for sale at a market located along a railway line in West Jakarta, Indonesia March 1, 2016. (Photo by Garry Lotulung/Reuters)

A vendor sells chili peppers at his stall at a market in Bangkok, Thailand March 31, 2016. (Photo by Jorge Silva/Reuters)

A migrant labourer brushes his teeth in front of a scrapped helicopter model in Mumbai, India, April 13, 2016. (Photo by Danish Siddiqui/Reuters)

Tattoo artists work on clients during the second International Tattoo Festival in Sochi, Russia, April 23, 2016. (Photo by Kazbek Basayev/Reuters)

A surfer dressed as Santa gets to his feet as he braves the cold seas and near flat waves during the annual Surfing Santa as part of the Santa Run and Surf 2016 at Fistral Beach in Newquay on December 4, 2016 in Cornwall, England. Now in its third year, the santa surf and fun run is organised by Fistral Surf Center and Cornwall Hospice Care and raises funds for local charities. (Photo by Matt Cardy/Getty Images)

An aerial view of the new Panama Canal expansion project on the Atlantic side of the Panama Canal during an organized media tour by Italy's Salini Impregilo, one of the main sub contractors of the Panama Canal Expansion project, in Panama City May 11, 2016. The newly expanded Panama Canal will be inaugurated on June 26, 2016. (Photo by Carlos Jasso/Reuters)