Chinese volunteers and students of the Confucius Institute of Kenyatta University sing a Chinese song at Kenyatta University in Nairobi, Kenya, on Sept. 21, 2018. The Confucius Institute of University of Nairobi and the Confucius Institute of Kenyatta University held celebrations respectively on Friday to mark the upcoming Mid-Autumn Festival, which falls on Sept. 24 this year. (Xinhua/Zhang Yu)