BEIJING -- At a logistics center belonging to a healthcare group in China, autonomous mobile robots carry shelves and containers out of the warehouse, a task that previously required human workers to take about 30,000 steps each day.

The artificial intelligence (AI) robots, developed by Chinese AI company Megvii, helped this logistics center reduce labor difficulties and costs, improve working efficiency, and promote its transformation from automation to intelligence.

Changsha, capital of Central China's Hunan province, has been a trial ground for several categories of smart vehicles, including self-driving buses running on China's first open-road smart-bus demonstration line, according to a spokesperson with Xiangjiang Smart Tech Innovation Center.

The smart-bus demonstration line, built by Xiangjiang New Area, is 7.8 km long and features 22 stops in both directions. However, the driver's seats are not empty, but are occupied by "safety personnel."

The throttle, brakes, steering wheel and gear lever in these autonomous vehicles are all managed by computers, allowing the "driver" to keep a better eye on events during test drives, according to He Jiancheng, one of the safety personnel.

"My main task is to deal with any unpredictable situations that the vehicle may encounter," he said.

Seeking to accelerate the development of AI applications and boost economic growth, China's Ministry of Science and Technology recently announced the first batch of 10 AI demonstration application scenarios, including smart farms, smart factories and autonomous driving.