Mary Anne Njen Kungu (C), a Kenyan student studying in China and a volunteer at Yuanmingyuan, or the Old Summer Palace, helps a tourist with QR code scanning at one of the park's entrances in Beijing, capital of China, Aug. 31, 2018. Yuanmingyuan set up its volunteer team in 2017 and has been recruiting volunteers from the public. In July 2018, about 20 overseas students from Africa joined the team to provide tourist services. (Xinhua/Luo Xiaoguang)