As one of the biggest cities in the world, Shanghai has played a key role in China's modern history, witnessing the nation's lows and its subsequent revival. Shanghai bore witness in 1921 to the birth of the Communist Party of China (CPC).
2021 marks the 100th anniversary of the founding of the CPC. What has the city gone through over 100 years? These numbers have answers.
(Produced by Lin Yuan, Xiong Jie, Tang Shining and Huo Jiamian)