File photo taken on Feb. 22, 2015 shows a British girl watching Chinese lunar New Year celebration parade in London, Britain. Chinese President Xi Jinping will pay a state visit to Britain from Oct. 19 to 23. (Xinhua/Han Yan)

File photo taken on Sept. 8, 2014 shows students waiting for the arrival of Prince William, Duke of Cambridge, before the inauguration of the Dickson Poon University of Oxford China Centre Building in Oxford, Britain. Chinese President Xi Jinping will pay a state visit to Britain from Oct. 19 to 23. (Xinhua/Han Yan)

File photo taken on Oct. 12, 2015 shows the Chinatown in London, Britain. Chinese President Xi Jinping will pay a state visit to Britain from Oct. 19 to 23. (Xinhua/Han Yan)

File photo taken on Sept. 8, 2014 shows Prince William (R), Duke of Cambridge, speaking with school students as he arrives to formally inaugurate the Dickson Poon University of Oxford China Centre Building in Oxford, Britain. Chinese President Xi Jinping will pay a state visit to Britain from Oct. 19 to 23. (Xinhua/Han Yan)

File photo taken on Feb. 22, 2015 shows the lion dance during the Chinese lunar New Year celebration in London, Britain. Chinese President Xi Jinping will pay a state visit to Britain from Oct. 19 to 23. (Xinhua/Han Yan)

File photo taken on Feb. 22, 2015 shows a British boy attending the Chinese lunar New Year celebration parade in London, Britain. Chinese President Xi Jinping will pay a state visit to Britain from Oct. 19 to 23. (Xinhua/Han Yan) 

File photo taken on Sept. 15, 2014 shows a poster (L) of an exhibition on antiques of China's Ming Dynasty in British Museum in London, Britain. Chinese President Xi Jinping will pay a state visit to Britain from Oct. 19 to 23. (Xinhua/Han Yan)

File photo taken on Sept. 8, 2014 shows the books on display of the library in the China Center Building of the Dickson Poon University of Oxford, Britain. Chinese President Xi Jinping will pay a state visit to Britain from Oct. 19 to 23. (Xinhua/Han Yan)

File photo taken on Feb. 22, 2015 shows People attending the Chinese lunar New Year celebration in Trafalgar Square in central London, Britain. Chinese President Xi Jinping will pay a state visit to Britain from Oct. 19 to 23. (Xinhua/Han Yan)

File photo taken on Sept. 15, 2014 shows a poster on the exhibition of antiques of China's Ming Dynasty in British Museum in London, Britain. Chinese President Xi Jinping will pay a state visit to Britain from Oct. 19 to 23. (Xinhua/Han Yan)

File photo taken on Sept. 8, 2014 shows the entrance of the China Center Building of the Dickson Poon University of Oxford, Britain. Chinese President Xi Jinping will pay a state visit to Britain from Oct. 19 to 23. (Xinhua/Han Yan)

File photo taken on March 17, 2015 shows Chinese mathematics teacher Jin Xiangjun(R) helping local students with their lessons in Essex, Britain. Chinese President Xi Jinping will pay a state visit to Britain from Oct. 19 to 23. (Xinhua/Han Yan)

File photo taken on March 21, 2015 shows Riona Lesslar from University of Edinburgh performs during the final of the 14th "Chinese Bridge" Chinese Proficiency Competition UK 2015 held in British Library Conference Center in London, Britain. Chinese President Xi Jinping will pay a state visit to Britain from Oct. 19 to 23. (Xinhua/Han Yan) 

File photo taken on Feb. 22, 2015 shows people attending the Chinese lunar New Year celebration in London, Britain. Chinese President Xi Jinping will pay a state visit to Britain from Oct. 19 to 23. (Xinhua/Han Yan)

File photo taken on Feb. 22, 2015 shows Chinese Opera performers attending the Chinese lunar New Year celebration in London, Britain. Chinese President Xi Jinping will pay a state visit to Britain from Oct. 19 to 23. (Xinhua/Han Yan)

File photo taken on Nov. 12, 2014 shows flower-shaped lanterns at the illumination ceremony for the Chinese Festival of Light in Longleat of Wiltshire, Britain. Chinese President Xi Jinping will pay a state visit to Britain from Oct. 19 to 23. (Xinhua/Han Yan)

File photo taken on March 17, 2015 shows Chinese mathematics teacher Lin Lei (R) giving a lesson about Chinese traditional Multiplication Table to local students in Essex, Britain. Chinese President Xi Jinping will pay a state visit to Britain from Oct. 19 to 23. (Xinhua/Han Yan)

File photo taken on April 14, 2015 shows a man reading the book "Xi Jinping: the Governance of China" at the London Book Fair, Britain. Chinese President Xi Jinping will pay a state visit to Britain from Oct. 19 to 23. (Xinhua/Han Yan)