Ethnic groups reread the oath of admission to the Communist Party of China at the Museum of the CPC in Beijing, on June 30, 2021. (Photos: China Daily)

Ethnic groups view an exhibition on the Communist Party of China's history at the Museum of the CPC in Beijing, on June 30, 2021.

Ethnic groups view an exhibition on the Communist Party of China's history at the Museum of the CPC in Beijing, on June 30, 2021.

Ethnic groups view an exhibition on the Communist Party of China's history at the Museum of the CPC in Beijing, on June 30, 2021.

Members of ethnic groups pose for photos at the Museum of the Communist Party of China in Beijing, on June 30, 2021.