This photo taken on August 7, 2016 shows mahjong enthusiasts playing mahjong under water in a swimming pool at a diving club in the Chinese city of Chongqing. Only participants with proper diving certification were allowed to take part in the underwater competition. (Photo by AFP Photo/Stringer)

An Israeli boy swims next to sheep belonging to a Palestinian farmer in the West Bank village of Al-Auja in the Jordan Valley on April 8, 2015 during the Jewish Passover holiday. Thousands of Israelis spent the day outdoors, picnicking and touring the country during the eight-day Passover holiday, which commemorates the Israelites' exodus from Egypt some 3,500 years ago. (Photo by Menahem Kahana/AFP Photo)

Actress Bai Ling poses for a picture in front of St. Basil's Cathedral at the Red Square in Moscow, Russia, July 1, 2015. (Photo by Ivan Burnyashev/Reuters)

Miss France Iris Mittenaere (R) and Miss Haiti Raquel Pelissier hold hands before Mittenaere is announced winner of the 65th Miss Universe beauty pageant at the Mall of Asia Arena, in Pasay, Metro Manila, Philippines January 30, 2017. (Photo by Erik De Castro/Reuters)

David Jackson (C), who voted for Donald Trump, has a discussion with Ryan Graves (L) and Anna Kaminski (R) visiting from Oamaha, Nebraska during a rally against the election of Republican Donald Trump as President of the United States in downtown Indianapolis, Indiana, U.S., November 12, 2016. (Photo by Clay Lomneth/Reuters)

An Indian Sikh Nihang, or warrior, performs Gatka martial arts skills during a procession at the Golden Temple in Amritsar on January 6, 2014, as part of birth anniversary celebrations of Guru Gobind Singh. The birth anniversary of Guru Gobind Singh, the tenth Sikh guru, is marked on January 6. (Photo by Narinder Nanu/AFP Photo)

A man holds a child after rescuing him from a kindergarten affected by a fire at a commercial building, in Ningde, Fujian province, China, September 16, 2015. According to local media, more than 260 people were evacuated due to the fire, which broke out Wednesday morning. No causalities have been reported and the cause of it is still unknown. (Photo by Reuters/China Daily)

Dancers from the “Legend Lin Dance Theatre” perform the artistic director and choreographer Li-chen Lin's classic works “Hymne aux Fleurs qui Passent, Anthem to the Fading Flowers” during a rehearsal at the National Theater Concert Hall in Taipei, Taiwan, Tuesday, August 18, 2015. “Hymne aux Fleurs Qui Passent” pays tribute to the cycle of the year and the complementary principles of Yin and Yang whose eternal struggle provides the driving force behind the changing of the seasons. (Photo by Chiang Ying-ying/AP Photo)