The 2019 World Robot Conference started Tuesday in the Chinese capital of Beijing. Themed "Intelligent Ecosystem for a New Open Era," it attracted nearly 200 research institutions and robotics companies around the world. More than 700 of the latest robots are on display. Gai Keke, an associate professor at the School of Computer Science and Technology at Beijing Institute of Technology, speaks to CGTN about "working" robots, their ability to perform different tasks, and whether they will replace humans or just help out?