Xi Jinping and other leaders of the Communist Party of China (CPC) and the state, including Li Keqiang, Li Zhanshu, Wang Yang, Wang Huning, Zhao Leji, Han Zheng and Wang Qishan, visit the Chairman Mao Memorial Hall before attending a ceremony held to pay tribute to deceased national heroes on the Martyrs' Day at the Tian'anmen Square in Beijing, capital of China, Sept. 30, 2019. [Photo/Xinhua]