Xi Jinping, Li Keqiang, Li Zhanshu, Wang Yang, Wang Huning, Zhao Leji and Han Zheng visit the "Red Building," once the main campus of Peking University, and learn about the history of preparation and founding of the Communist Party of China at an exhibition in Beijing, capital of China, June 25, 2021. A group study session of the Political Bureau of the Communist Party of China Central Committee was held on Friday. [Photo/Xinhua]