Visitors look at a robot that can mimic the face-changing stunt used in Sichuan Opera during the World Robot Conference at Beijing Yichuang International Conference and Exhibition Center, in Beijing, Aug. 23, 2017. The conference from Aug. 23 to Aug. 27 includes a conference on robotics, an exhibition and a competition with more than 100 robotics enterprises participating to showcase their products. (Photo: China News Service/Liu Guanguan)
