Chinese President Xi Jinping, also general secretary of the Communist Party of China Central Committee and chairman of the Central Military Commission, speaks to staff while visiting a research institute of oil exploration in the Shengli Oilfield in the city of Dongying, east China's Shandong Province, Oct. 21, 2021. After the visit, Xi on Friday chaired a symposium on ecological protection and high-quality development of the Yellow River basin in Jinan, east China's Shandong Province. (Xinhua/Li Xueren)
