This picture taken on September 13, 2016 shows journalists walking past empty buildings in Lulang, near Nyingchi in China's Tibet Autonomous Region. Tibet tourism officials are hoping to see visitor numbers to increase by nearly 50 percent in the next four years as part of its drive to get tens of millions more tourists to visit, even as critics say the push is slowly eroding the local culture. / AFP PHOTO / JOHANNES EISELE / TO GO WITH AFP STORY CHINA-TIBET-ECONOMY-CULTURE-TOURISM, FOCUS BY LUDOVIC EHRETJOHANNES EISELE/AFP/Getty Images

This picture on September 13, 2016 shows a construction site behind chalets of the Artel hotel in Lulang, near Nyingchi in China's Tibet Autonomous Region. China has unveiled a sparkling new hotel as part of its drive to get tens of millions more tourists to visit Tibet, even as critics say the push is slowly eroding the local culture. / AFP PHOTO / JOHANNES EISELE / TO GO WITH AFP STORY CHINA-TIBET-ECONOMY-CULTURE-TOURISM, FOCUS BY LUDOVIC EHRETJOHANNES EISELE/AFP/Getty Images

JOLIET, IL - SEPTEMBER 17: Michael McDowell, driver of the #95 Thrivent Financial/TMNT Donatello Chevrolet, practices for the NASCAR Sprint Cup Series Teenage Mutant Ninja Turtles 400 at Chicagoland Speedway on September 17, 2016 in Joliet, Illinois. (Photo by Sean Gardner/Getty Images)

A protester has fixed on his back a picture of German Vice Chancellor, Economy and Energy Minister Sigmar Gabriel hiding his nudity with a maple leaf reading "CETA" during a demonstration against the massive transatlantic trade deals CETA and TTIP on September 17, 2016 in Berlin. Demonstrators took to the streets across Germany in protest over a massive transatlantic trade agreement, the Transatlantic Trade and Investment Partnership (TTIP) between the European Union with the United States and it's smaller version CETA between the European Union and Canada. The European Union and the United States began negotiating TTIP in 2013, aiming to create the world's biggest free trade market of 850 million consumers. / AFP PHOTO / Odd ANDERSENODD ANDERSEN/AFP/Getty Images

TOPSHOT - French President Francois Hollande (L) and German Chancellor Angela Merkel deliver a joint statement after the European Union Summit of 27 Heads of State or Government in Bratislava, Slovakia on September 16, 2016. The 27 leaders -- minus British Prime Minister Theresa May -- gathered at Bratislava's towering castle overlooking the River Danube, determined to respond to the challenges of mass migration, security, globalisation and a stuttering economy. / AFP PHOTO / JOE KLAMARJOE KLAMAR/AFP/Getty Images

(FILES) This file photo taken on May 25, 2010 shows a South African airways flight taking off as another one is parked in a bay on the tarmacat the Johannesburg O.R Tambo International airport in Johannesburg, South Africa. An abyssal debt, unprofitable lines, a controversial Chairman: South African Airways (SAA) is immersed in an iconic crisis of mismanagement alleged to the head of state Jacob Zuma, who feeds the anxiety of financial markets. / AFP PHOTO / GIANLUIGI GUERCIAGIANLUIGI GUERCIA/AFP/Getty Images

NEW YORK, NY - SEPTEMBER 16: A police officer pauses as New York City Police Commissioner Bill Bratton and his wife Rikki Klieman walk through 1 Police Plaza in downtown Manhattan during a a ceremonial send-off on September 16, 2016 in New York City. Bratton, who left three years into his second term as the cityÕs police commissioner, ended his law enforcement career to go into private business. (Photo by Spencer Platt/Getty Images)

NEW YORK, NY - SEPTEMBER 16: New York City Police Commissioner Bill Bratton and his wife Rikki Klieman stand on an antique police wagon at 1 Police Plaza in downtown Manhattan during a ceremonial send-off on September 16, 2016 in New York City. Bratton, who left three years into his second term as the city's police commissioner, ended his law enforcement career to go into private business. (Photo by Spencer Platt/Getty Images)