A light show is held to celebrate the 100th anniversary of the founding of the Communist Party of China in Shanghai on June 22, 2021. [Photo/CCTV]

A light show is held to celebrate the 100th anniversary of the founding of the Communist Party of China in Shanghai on June 22, 2021. [Photo/CCTV]

A light show is held to celebrate the 100th anniversary of the founding of the Communist Party of China in Shanghai on June 22, 2021. [Photo/CCTV]

A light show is held to celebrate the 100th anniversary of the founding of the Communist Party of China in Shanghai on June 22, 2021. [Photo/CCTV]

A light show is held to celebrate the 100th anniversary of the founding of the Communist Party of China in Tianjin on June 22, 2021. [Photo/CCTV]

A light show is held to celebrate the 100th anniversary of the founding of the Communist Party of China in Chongqing on June 22, 2021. [Photo/CCTV]