Robot dogs, flying cars and helpful dolls among highlights at Mobile World Congress

Tech companies showcase their latest gadgets at the world's biggest wireless telecoms fair, the four-day-long Mobile World Congress in Barcelona.

Aiguo Zheng, Executive Director in Lenovo said The transparent display happened in the future movies. Although maybe the AR glasses. Right? That's only in the past, we can see. But this is the first time that we bring transparent, a micro LED technology to the PC. So we use a micro LED technology to put it on the glass. Among the products on show are a robot dog, a flying car and robotic doll aimed at assisting the elderly.