In this February 18, 2016, file photo, North Korean performers entertain customers at the Okryugwan restaurant in Beijing. Chinese news reports Thursday, September 28, 2017, say the government has ordered most North Korean-owned businesses and ventures with Chinese partners to close under U.N. sanctions imposed over the North's nuclear and missile programs. (Photo by Ng Han Guan/AP Photo)





People dance in a park on a foggy day in Huai'an, Jiangsu province, China October 10, 2017. (Photo by Reuters/China Stringer Network)





A peg holds small change in the one-room home of migrant worker in Beijing, China onOctober 14, 2017. (Photo by Thomas Peter/Reuters)





In this August 29, 2017 photo, Chinese men prepare rafts for tourists visiting the river that divides China from North Korea on the left near the Chinese city of Jian in northeastern China's Jilin province. Securing North Korea's missile launchers and nuclear, chemical and biological weapons sites would likely be a chief priority for China in the event of a major crisis involving its communist neighbor, analysts say, although Beijing so far is keeping mum on any plans. (Photo by Ng Han Guan/AP Photo)





About 10,000 bicycles, owned by bike sharing companies in the city, have been seized off the streets by authorities for being parked haphazardly in Shenzhen, China on September 28, 2017. (Photo by Imaginechina/Rex Features/Shutterstock)





A bare foot folk artist walks on a giant knife during an intangible cultural heritage performance on October 1, 2017 in Guiyang, Guizhou Province of China. Chinese people celebrate the 68th anniversary of the founding of the People's Republic of China on Oct 1st. (Photo by VCG/VCG via Getty Images)





Farmers dry the corn cobs in Tianjingguan Village of Shiqiao Township, Yiyuan County of east China's Shandong Province, October 4, 2017. Most Chinese provinces are witnessing a harvest time during the National Day holiday season, which is one of the busiest times of the year for the Chinese farmers. (Photo by Zhao Dongshan/Xinhua/Barcroft Images)





A worker processes panda soft toys for export to American and European markets at a factory in Lianyungang, Jiangsu province, China, October 9, 2017. (Photo by Reuters/China Stringer Network)





Cyclists during a busy rush hour in the Chinese capital Beijing, China on October 12, 2017. (Photo by Thomas Peter/Reuters)





Workers clean as they set a up red carpet at the Monument to the People's Heroes for the upcoming Martyrs' Day in Beijing, China September 29, 2017. (Photo by Reuters/China Stringer Network)





Paramilitary police officers keep watch as tourists sit near the wall surrounding the Forbidden City in Beijing, China, October 12, 2017. (Photo by Thomas Peter/Reuters)





A visitor handles a model of a weapon at a military simulator area during an exhibition displaying China's achievements for the past five years, as a part of the celebrations of the upcoming 19th National Congress of the Communist Party of China (CPC) at Beijing Exhibition Centre in Beijing, China October 10, 2017. (Photo by Jason Lee/Reuters)





Primary school students dressed in replica red army uniforms attend a flag-raising ceremony at Tiananmen Square in Beijing, China October 14, 2017. (Photo by Reuters/China Stringer Network)





A farmer arranges crops to dry in Huangling ancient village in Wuyuan, Jiangxi province, China October 14, 2017. (Photo by Reuters/China Stringer Network)





Chinese tourists gather to rest on the ground in Tiananmen Square during National Day celebrations in Beijing, China, 01 October 2017. China celebrates its National Day on 01 October, marking its 68th founding anniversary. (Photo by Wu Hong/EPA/EFE)





A Chinese girl sits on his father's shoulders near a giant basket decorated with replicas of flowers and fruits on display at Tiananmen Square on China's National Day in Beijing, Sunday, October 1, 2017. Hundreds of thousands foreign and domestic tourists flock to the square to celebrate the 68th National Day and the Mid-Autumn Festival over the week-long holidays. (Photo by Andy Wong/AP Photo)





Chinese tourists rest in front of a portrait of Sun Yat-sen, often regarded as the founding father of modern China, in Tiananmen Square during National Day celebrations in Beijing, China, 01 October 2017. (Photo by Wu Hong/EPA/EFE)





In this October 15, 2017 photo, residents ride bicycles past police van parked at a junction in Beijing, China. (Photo by Ng Han Guan/AP Photo)





In this October 16, 2017 photo, a deputized citizen gives direction to a resident near a Chinese Community Party flag on the streets of Beijing, China. (Photo by Ng Han Guan/AP Photo)





In this October 15, 2017 photo, Chinese paramilitary policemen guard a traffic junction in Beijing, China. (Photo by Ng Han Guan/AP Photo)





In this October 16, 2017 photo, a security guard with a shield and restraining pole keeps watch along the streets of Beijing, China. Extraordinary security measures are being imposed ahead of the party congress, in addition to the typical security forces, thousands of deputized citizens patrol the streets, and knife, fireworks and chemical sales have been suspended. (Photo by Ng Han Guan/AP Photo)





Chinese urban enforcement officers ride self-balancing scooters to patrol street on the Hanjiang Road on October 10, 2017 in Wuhan, Hubei Province of China. Considering large number of pedestrians and their safety on the Hanjiang Road, urban enforcement officers patrol with self-balancing scooters instead of electric quadricycles. (Photo by VCG/VCG via Getty Images)