A file photo of Wing On Company is put to match the real scene of the building, now Wing On Department Store, in Shanghai, east China, May 23, 2016. Wing On Company, also a department store, was opened in 1918. Great changes have taken place in Shanghai, where the Communist Party of China (CPC) was founded in 1921. This year marks the 95th anniversary of the founding of the CPC. (Xinhua/Zhang Cheng)

A file photo of the Sincere Company is put to match the real scene of the building, now the Shanghai Fashion Store, in Shanghai, east China, May 23, 2016. The Sincere department store was opened in 1917. Great changes have taken place in Shanghai, where the Communist Party of China (CPC) was founded in 1921. This year marks the 95th anniversary of the founding of the CPC. (Xinhua/Zhang Cheng)

A file photo in 1940s is put to match the real scene of the building of the Cathay Theater in Shanghai, east China, May 24, 2016. The theater was built in 1930. Great changes have taken place in Shanghai, where the Communist Party of China (CPC) was founded in 1921. This year marks the 95th anniversary of the founding of the CPC. (Xinhua/Zhang Cheng)

A file photo is put to match the real scene of the building of the Shanghai Post Office, which is a post museum now, in Shanghai, east China, May 24, 2016. The post office was built in 1924. Great changes have taken place in Shanghai, where the Communist Party of China (CPC) was founded in 1921. This year marks the 95th anniversary of the founding of the CPC. (Xinhua/Zhang Cheng)

A file photo, taken on May 25, 1949 showing slodiers of the Chinese People's Liberation Army on the Waibaidu Bridge, is put to match the real scene of the bridge in Shanghai, east China, May 24, 2016. Great changes have taken place in Shanghai, where the Communist Party of China (CPC) was founded in 1921. This year marks the 95th anniversary of the founding of the CPC. (Xinhua/Zhang Cheng)

A file photo is put to match the real scene of the building which was the former residence of late Chinese leader Mao Zedong during the First National Congress of the Communist Party of China (CPC) in 1921, in Shanghai, east China, May 27, 2016. Great changes have taken place in Shanghai, where the Communist Party of China was founded in 1921. This year marks the 95th anniversary of the founding of the CPC. (Xinhua/Zhang Cheng)

A file photo in 1950 is put to match the real scene of the building of Broadway Mansions, now Shanghai Mansions, in Shanghai, east China, May 27, 2016. The mansions were built in 1934. Great changes have taken place in Shanghai, where the Communist Party of China (CPC) was founded in 1921. This year marks the 95th anniversary of the founding of the CPC. (Xinhua/Zhang Cheng)

A file photo taken in 1920s is put to match the real scene of Nanjing Road, a prosperous commericial street, in Shanghai, east China, May 23, 2016. Great changes have taken place in Shanghai, where the Communist Party of China (CPC) was founded in 1921. This year marks the 95th anniversary of the founding of the CPC. (Xinhua/Zhang Cheng)

A file photo of the building of the Bank of Communications in the 1920s is put to match the real scene, now the seat of the Shanghai Trade Union, in Shanghai, east China, May 24, 2016. Great changes have taken place in Shanghai, where the Communist Party of China (CPC) was founded in 1921. This year marks the 95th anniversary of the founding of the CPC. (Xinhua/Zhang Cheng)