A woman helps a Chinese Muslim woman adjust her headscarf before Eid al-Fitr prayers at the Niujie mosque, the oldest and largest mosque in Beijing, Saturday, July 18, 2015. The Eid al-Fitr celebrations mark the end of the Muslim holy fasting month of Ramadan. (Photo by Mark Schiefelbein/AP Photo)

In this Friday, July 17, 2015 photo, a delivery cart and cyclist ride past a building housing the Fengrui law firm in Beijing. Since late May, police across China have detained and called in at least 215 rights lawyers and social activists, including many of Fengrui's lawyers. State propaganda has kicked into high gear to denounce them as rabble-rousers, criminal gangs, and profit-seeking opportunists. (Photo by Mark Schiefelbein/AP Photo)

An officer wipes sweat off the face of a Chinese People's Liberation Army (PLA) honor guard soldier as they rehearse for a welcoming ceremony for New Zealand's Governor-General Sir Jerry Mateparae at the Great Hall of the People in Beijing, Tuesday, July 21, 2015. (Photo by Mark Schiefelbein/AP Photo)

In this January 8, 2012 file photo, people rush to catch their train at Beijing station in Beijing, China as millions of Chinese are expected to cramp onto China's train network in the coming weeks to return home for the Chinese lunar new year. Beijing's city government said Sunday, July 12, 2015 that it is going to move part of its administrative functions out of the city center as part of a plan to better integrate the Chinese capital with its surrounding areas. The municipal government's Communist Party committee also agreed at a meeting Friday and Saturday to stick to its target to limit Beijing's population to 23 million, according to the government's information office microblog. Its population was 21.5 million at the end of 2014. (Photo by Andy Wong/AP Photo)

Visitors crowd a seaside beach on the first day this summer that it was open to the public in Qingdao in eastern China's Shandong province Wednesday, July 1, 2015. China's beaches are a popular destination for its citizens to escape the summer heat. (Photo by Chinatopix Via AP Photo)

In this photo taken Friday July 17, 2015, visitors to a water park enjoy massage tubs near a banner warning visitors against having s*x while using the facilities, in southwestern China's Chongqing Municipality. A recent s*x video shot in a fitting room that had gone viral online have raised questions over social morals and ethics. (Photo by Chinatopix via AP Photo)

A Chinese Muslim man sits on a pillar as he waits for Eid al-Fitr prayers to begin at the Niujie mosque, the oldest and largest mosque in Beijing, Saturday, July 18, 2015. (Photo by Mark Schiefelbein/AP Photo)

Chinese performers take part in the opening of the “Dreams of Europe and China” art exhibition at the Ocean Beach theme park in Beijing, China, Friday, July 10, 2015. The exhibition marks the 40th anniversary of official ties between the EU and China. (Photo by Ng Han Guan/AP Photo)

Vehicles drive on the Guomao Bridge through Beijing's central business district, June 11, 2015. The World Bank said on July 1, 2015, it expects China's economy to grow 7.1 percent this year, the same as forecast earlier, before cooling to 7.0 percent next year and 6.9 percent in 2017. (Photo by Jason Lee/Reuters)

An investor looks at a computer screen showing stock information at a brokerage house in Shanghai, China, July 2, 2015. China stocks closed down sharply on Thursday after another wild trading day as investors shrugged off regulators' intensified efforts to put a floor under the sliding market. (Photo by Aly Song/Reuters)

Investors look at computer screens showing stock information at a brokerage house in Wuhan, Hubei province, China, July 3, 2015. China stocks slumped again on Friday, taking their three-week tumble to nearly 30 percent and wiping out most of this year's gains. (Photo by Reuters/China Daily)

Investors look at computer screens showing stock information at a brokerage house in Shanghai, China, July 13, 2015. (Photo by Aly Song/Reuters)

Students take term final exam among trees outside classroom building at a middle school in Xinxiang, Henan province, China, July 3, 2015. The school set up the exam outdoor to create a more comfortable environment for the students, according to local media. (Photo by Reuters/Stringer)

Students take term final exam among trees outside a classroom building at a middle school in Xinxiang, Henan province, China, July 3, 2015. (Photo by Reuters/Stringer)

A worker tries to clear blue-green algae from Chaohu Lake, Hefei, Anhui province, China, July 4, 2015. Picture taken July 4, 2015. (Photo by Reuters/Stringer)

A fisherman rides past an algae-covered beachside in Rizhao, Shandong province, China, July 6, 2015. Picture taken July 6, 2015. (Photo by Reuters/Stringer)

Children and parents rope down a building as they participate in a safety education activity to experience a fire escape, at a school in Guangzhou, Guangdong province, July 5, 2015. The activity also prepares students with proper reactions to emergencies like traffic accidents and earthquakes, according to local media. (Photo by Reuters/Stringer)

Students sit in front of laptop screens showing stock information at their dormitory, in Beijing, November 6, 2007. China's government may be rattled by the wild plunge in stock prices over the past month, but for many of the country's students, it's just another exercise to get ready for life in the real world. (Photo by Reuters/Stringer)

Villagers use pumps to get water from a partially dried-up pond as drought hits Penglai, Shandong province, China, July 8, 2015. Severe drought hit part of Shandong province in eastern China due to lack of substantial rainfalls since this spring, local media reported. (Photo by Reuters/China Daily)

Fishing boats are seen anchored in a bay as Typhoon Chan-Hom approaches southern China, in Wenling, Zhejiang province, July 8, 2015. Chinese authorities have suspended train services, closed schools and bought trawlers back to port before two typhoons in the south and east of the country make landfall later this week, state media said. (Photo by William Hong/Reuters)

People play mahjong in front of a poster of Chinese President Xi Jinping and his wife Peng Liyuan, and a poster of China's former leaders, as Typhoon Chan-Hom approaches southern China, in Wenling, Zhejiang province, July 8, 2015. Chinese authorities have suspended train services, closed schools and bought trawlers back to port before two typhoons in the south and east of the country make landfall later this week, state media said. (Photo by William Hong/Reuters)

Workers walk along wires as they inspect newly-built electricity pylons above crop fields in Chuzhou, Anhui province, China, July 9, 2015. (Photo by Reuters/China Daily)

Workers inspect newly-built electricity pylons above crop fields in Chuzhou, Anhui province, China, July 9, 2015. (Photo by Reuters/China Daily)

People fish along the bank of the Yellow River as the Sammenxia Dam discharges flood waters downstream, in Pinglu, Shanxi province, July 9, 2015. People risk sitting on the bank of the flooded river to catch the surge of fish forced to the river surface by the rushing water and hypoxia environment in deepwater, according to local media. (Photo by Reuters/China Daily)

An aerial view shows boats being anchored in a bay as Typhoon Chan-Hom approaches Taizhou, Zhejiang province, China, July 9, 2015. Chinese authorities have suspended train services, closed schools and bought trawlers back to port before two typhoons in the south and east of the country make landfall later this week, state media said. (Photo by Reuters/Stringer)

A man takes a nap in a tricycle on a street at a financial district in Beijing, China, July 10, 2015. The plunge in China's previously booming stock markets, which had more than doubled in the year to mid-June, has created a major headache for President Xi Jinping and China's top leaders, who are already grappling with slowing growth. (Photo by Kim Kyung-Hoon/Reuters)

A worker rows a boat as he cleans the duckweeds on the surface of a river in Mianyang, Sichuan province, China, July 10, 2015. (Photo by Reuters/Stringer)

Workers try to restore a utility pole after a road collapsed in Dingyuan county, Anhui province, July 13, 2015. The caved-in area is around 100 square metres (1,076 square ft.) and three people were injured in the incident, according to local media. (Photo by Reuters/Stringer)

Over 100-squaremeter subsidence after road collapses is seen in front of a department store at Dingyuan County early morning on July 13, 2015 in Chuzhou, Anhui Province of China. The cave-in occurred on Monday in Anhui brought three people into injured and a truck trapped into the hole. The building near the collapse had closed down in case of joint collapse and further reasons were under investigation. (Photo by ChinaFotoPress/ChinaFotoPress via Getty Images)

People unpack frozen beef ribs from the U.S. on a back street at an industrial area in Hong Kong, before being hand carried and smuggled across the border into mainland China, July 13, 2015. As China's appetite for meat continues to grow, a crackdown is under way on illegal smuggling from Vietnam and Hong Kong. (Photo by Bobby Yip/Reuters)

People handle frozen beef tripe from Brazil on a back street at an industrial area in Hong Kong before they are smuggled across the border into mainland China, July 8, 2015. (Photo by Bobby Yip/Reuters)

A man handles portions of frozen beef tripe from Brazil on a back street at an industrial area in Hong Kong before they are smuggled across the border into mainland China, July 8, 2015. (Photo by Bobby Yip/Reuters)

A man unpacks frozen beef ribs from the U.S. on a back street at an industrial area in Hong Kong, before they are hand carried and smuggled across the border into mainland China, July 13, 2015. (Photo by Bobby Yip/Reuters)

Boys take pictures of themselves as Muslims gather to celebrate Eid al-Fitr at the historic Niujie mosque in Beijing July 18, 2015. The Eid al-Fitr festival marks the end of the holy Muslim fasting month of Ramadan. (Photo by Damir Sagolj/Reuters)

A man tests a simulator of the flying jetpack made by Martin Aircraft, at a innovation exhibition in Shenzhen, Guangdong province, China, July 20, 2015. The jetpack made its debut appearance in China on Monday in the southern city of Shenzhen, at a unit price of 1.6 million yuan ($260,000 USD), local media reported. (Photo by Reuters/Stringer)

A boat travels past the Zhuhai Opera House under construction off the coast of the Yeli Island, in Zhuhai, Guangdong province, China, July 20, 2015. The opera house, in the shape of two shells, costs about 1.08 billion yuan (170 million USD) and is expected to be completed at the end of this year, local media reported. (Photo by Reuters/Stringer)

Villagers walk past a house where revolutionary slogans are painted on the wall in Dongzhai village, Guangxi Zhuang Autonomous Region, China, July 19, 2015. The village, with a population about 1,600 people, is known locally for its revolutionary slogans dating from the 1950s, which could be seen on almost every old house, local media reported. The slogan on the wall reads: “Take Chairman Mao's instructions, mark them in the brain, melt them in the blood and practice them in action”. (Photo by Reuters/Stringer)

A villager sits in a doorway of a house where revolutionary slogans are painted on the wall in Dongzhai village, Guangxi Zhuang Autonomous Region, China, July 19, 2015. The slogan on the wall reads: “Just for the people (L), wholeheartedly for the public (top) and never for the self”. (Photo by Reuters/Stringer)

A villager stands in front of a house where revolutionary slogans are painted on the wall in Dongzhai village, Guangxi Zhuang Autonomous Region, China, July 19, 2015. The slogan on the wall reads: “Learn from the supreme instructions, execute the supreme instructions, promote the supreme instructions and defend the supreme instructions”. (Photo by Reuters/Stringer)

A cyclist rides past busy traffic and government administrative buildings on Chang'an Avenue in Beijing Sunday, July 12, 2015. Beijing's city government said Sunday that it is going to move part of its administrative functions out of the city center as part of a plan to better integrate the Chinese capital with its surrounding areas. (Photo by Andy Wong/AP Photo)

Liu Shoupeng, a Chinese Muslim and retired electrical engineer, third from left, prays with fellow worshipers during Eid al-Fitr prayers at Niujie Mosque, the oldest and largest mosque in Beijing, Saturday, July 18, 2015. Liu, 74, a member of the Muslim Hui minority group, is a devout believer who says he has not missed a day of prayer in 15 years and attends the same mosque that his father and grandfather did. (Photo by Mark Schiefelbein/AP Photo)

In this photo taken Monday, March 16, 2015, a street vendor hawks counterfeit branded items to tourists on the streets of Beijing. Counterfeiting is a big business, by one estimate, the global market for fakes will hit $1.7 trillion this year. (Photo by Ng Han Guan/AP Photo)

In this photo taken Friday, March 20, 2015, a street vendor hawks counterfeit branded items to tourists on the streets of Beijing. (Photo by Ng Han Guan/AP Photo)

A woman rides past a city highway in Beijing, Sunday, July 12, 2015. Beijing's city government said Sunday that it is going to move part of its administrative functions out of the city center as part of a plan to better integrate the Chinese capital with its surrounding areas. (Photo by Andy Wong/AP Photo)

A man wipes his sweat next to women who use fans to cool themselves as they watch people perform social dance at Tuanjiehu Park in Beijing Sunday, July 12, 2015. (Photo by Andy Wong/AP Photo)

A child plays in water fountains at a shopping mall in Beijing, Monday, July 13, 2015. Chinese authorities issued a yellow alert for high temperatures as a heat wave sweeps parts of northern and central China. (Photo by Ng Han Guan/AP Photo)

Miao nationality people wearing traditional clothes perform during the 2015 Guizhou Jianhe Yang'asha Culture Festival on July 21, 2015 in Guiyang, China. The three-day festival is held every year to commemorate Yang'asha, a beautiful lady born in a well in the legend of Miao ethnic group. (Photo by ChinaFotoPress via Getty Images)

Chinese paramilitary policemen pledge loyalty to the Communist Party as they observe the 94th anniversary of the founding of the Communist Party of China in Mohe county in northeastern China's Heilongjiang province Wednesday, July 1, 2015. (Photo by Chinatopix Via AP Photo)

This picture taken on July 13, 2015 shows beachgoers with inflatable turtles amid high temperature on a beach in Qingdao, east China's Shandong province. (Photo by AFP Photo)

This picture taken on July 15, 2015 shows a man floating in the waters filled with algae at a beach in Qingdao, in eastern China's Shandong province. The algal phenomenon, an annual occurrence in Qingdao, is usually caused by an abundance of nutrients in the water, especially phosphorus, although the triggers for the enormous blooms which began to appear in the Yellow Sea in 2007 remain uncertain. (Photo by AFP Photo)