A train attendant helps a passenger to adjust her seat at the business class carriage on a CRH 380A bullet train Thursday, June 16, 2011. (Photo by Reuters/China Daily)

Undated UK Ministry of Defence handout photo of an RAF Tornado GR4 which has been painted in Gulf War “desert pink” paint scheme to honour the aircraft type's almost continuous operational service since the Royal Air Force helped liberate Kuwait from Saddam Hussein's forces, taken by SAC Rose Buchanan, which has been shortlisted for the general public to pick their favourite RAF Image of the Year. (Photo by SAC Rose Buchanan/MoD Crown Copyright/PA Wire)

Local residents crowd a swimming pool during a hot weather in Suining, Sichuan province, 27 July 2008. (Photo by Reuters/Stringer)

A Muslim bride waits for the start of a mass marriage ceremony in Mumbai, India, January 27, 2016. A total of 12 Muslim couples took their wedding vows during the mass marriage ceremony organised by a Muslim voluntary organisation, organisers said. (Photo by Danish Siddiqui/Reuters)

A model jumps during a photo shooting, in Milan, Italy, Friday, January 15, 2016. Men's fashion week starts today and will run until Tuesday, January 19. (Photo by Luca Bruno/AP Photo)

Hindu devotees watch as a 12 meter (40 feet) high statue of Hindu monkey-god Hanuman is washed during Hanuman Jayanti, the birthday of Lord Hanuman in Hyderabad, India, Friday, April 22, 2016. Hanuman is one of the most popular gods in the crowded pantheon of Hindu deities, and devout Hindus ascribe great strength and valor to him. (Photo by Mahesh Kumar A./AP Photo)

A walrus kisses a visitor during a sea animal show at the Hakkeijima Sea Paradise aquarium-amusement park complex in Yokohama, southwest of Tokyo, Monday, September 11, 2017. (Photo by Shizuo Kambayashi/AP Photo)

A man transports the carcass of a car on a two- wheeled carriage in a neighborhood in Abobo, a suburb of Abidjan, Côte d’Ivoire on December 1, 2017. (Photo by Issouf Sanogo/AFP Photo)