BEIJING, CHINA - JUNE 10: An elderly Chinese woman laughs with another while enjoying the weather at Ritan Park on June 10, 2016 in Beijing, China. Ritan, meaning 'sun altar', is among the oldest parks in Beijing, built in the early 1500s during the Ming dynasty for the emperor to make sacrifices to the sun. Less than half a kilometer square, Ritan these days is considered an oasis of green space in a sprawling city of skyscrapers, notorious air pollution, and a population of over 20 million people. Most Chinese live in small apartments with no access to gardens, leaving parks as a welcome haven for people, especially the elderly, to exercise, socialize, or enjoy a degree of privacy. The average day at Ritan is a showcase of conventional routines such as jogging, dancing, and martial arts, mixed with the assortment of odd activities -- including 'voice exercises' and back-scratching on trees -- that are known to be unique staples of Beijing park life. (Photo by Kevin Frayer/Getty Images)

MEMPHIS, TN - JUNE 12: A volunteer stands near a scoreboard with a message that play is temporarily suspended due to inclement weather during the final round of the FedEx St. Jude Classic at TPC Southwind on June 12, 2016 in Memphis, Tennessee. (Photo by Mike Lawrie/Getty Images)

MEMPHIS, TN - JUNE 12: Daniel Berger lines up a putt as play is temporarily suspended due to weather during the final round of the FedEx St. Jude Classic at TPC Southwind on June 12, 2016 in Memphis, Tennessee. (Photo by Mike Lawrie/Getty Images)

MEMPHIS, TN - JUNE 12: A rules official sounds the horn to temporarily suspend play due to weather during the final round of the FedEx St. Jude Classic at TPC Southwind on June 12, 2016 in Memphis, Tennessee. (Photo by Mike Lawrie/Getty Images)

TOPSHOT - Members of the public brave the inclement weather to watch events on a large screen in Green Park, as hundred's of guests from organisations with which the queen has links gather for the Patron's Lunch, a special street party outside Buckingham Palace in London on June 12, 2016, as part of the three day celebrations for Queen Elizabeth II's official 90th birthday. Up to 10,000 people are expected to attend the Patron's Lunch along with the monarch, her husband Prince Philip, Prince William and Prince Harry. / AFP PHOTO / OLI SCARFFOLI SCARFF/AFP/Getty Images

Members of the public dance with a cardboard cut-out of The Queen as they join members of the public braving the inclement weather to watch events on a large screen in Green Park, as hundred's of guests from organisations with which the queen has links gather for the Patron's Lunch, a special street party outside Buckingham Palace in London on June 12, 2016, as part of the three day celebrations for Queen Elizabeth II's official 90th birthday. Up to 10,000 people are expected to attend the Patron's Lunch along with the monarch, her husband Prince Philip, Prince William and Prince Harry. / AFP PHOTO / OLI SCARFFOLI SCARFF/AFP/Getty Images

Royal fans photograph each other as they join members of the public braving the inclement weather to watch events on a large screen in Green Park, as hundred's of guests from organisations with which the queen has links gather for the Patron's Lunch, a special street party outside Buckingham Palace in London on June 12, 2016, as part of the three day celebrations for Queen Elizabeth II's official 90th birthday. Up to 10,000 people are expected to attend the Patron's Lunch along with the monarch, her husband Prince Philip, Prince William and Prince Harry. / AFP PHOTO / OLI SCARFFOLI SCARFF/AFP/Getty Images

Police officers wave Union Flags and dance as they join members of the public braving the inclement weather to watch events on a large screen in Green Park, as hundred's of guests from organisations with which the queen has links gather for the Patron's Lunch, a special street party outside Buckingham Palace in London on June 12, 2016, as part of the three day celebrations for Queen Elizabeth II's official 90th birthday. Up to 10,000 people are expected to attend the Patron's Lunch along with the monarch, her husband Prince Philip, Prince William and Prince Harry. / AFP PHOTO / OLI SCARFFOLI SCARFF/AFP/Getty Images