A self-driving bus is seen running on a road of Changyang Campus in Yangpu district, east China's Shanghai, June 21, 2019. In recent years, Yangpu District has vigorously developed Artificial Intelligence (AI) industry in the process of industrial transformation, making efforts to establish several innovation zones focusing on AI such as Changyang Campus. (Photos: Xinhua)

A robot trims the lawn at Changyang Campus in Yangpu district, east China's Shanghai, June 21, 2019. In recent years, Yangpu District has vigorously developed Artificial Intelligence (AI) industry in the process of industrial transformation, making efforts to establish several innovation zones focusing on AI such as Changyang Campus.

A robot is seen making a drink at Changyang Campus in Yangpu district, east China's Shanghai, June 21, 2019. In recent years, Yangpu District has vigorously developed Artificial Intelligence (AI) industry in the process of industrial transformation, making efforts to establish several innovation zones focusing on AI such as Changyang Campus.

A visitor interacts with a robot at Changyang Campus in Yangpu district, east China's Shanghai, June 21, 2019. In recent years, Yangpu District has vigorously developed Artificial Intelligence (AI) industry in the process of industrial transformation, making efforts to establish several innovation zones focusing on AI such as Changyang Campus.

Photo taken on June 21, 2019 shows a view of Changyang Campus in Yangpu district, east China's Shanghai. In recent years, Yangpu District has vigorously developed Artificial Intelligence (AI) industry in the process of industrial transformation, making efforts to establish several innovation zones focusing on AI such as Changyang Campus.