BEIJING, Sept. 25 (Xinhua) -- The following is a summary of published science and technology news of China.

CHANG'E-4 PROBE

The lander and the rover of the Chang'e-4 probe have been switched to dormant mode for the lunar night after working stably for a 22nd lunar day, according to the Lunar Exploration and Space Program Center of the China National Space Administration.

The Chang'e-4 probe, switching to dormant mode during the lunar night due to the lack of solar power, has survived 630 Earth days on the far side of the moon as of Thursday, and the rover has traveled 547.17 meters.

SPACE-TRACKING SHIP

Space-tracking ship Yuanwang-5 has departed from a port in east China's Jiangsu Province on Thursday for a maritime monitoring mission in the Pacific Ocean.

This is the third voyage of the ship this year. It will spend more than 100 days at sea and is scheduled to return in early 2021.

CITY-LEVEL AI PLATFORM

Based on artificial intelligence (AI) and Internet of Things (IoT) technology, a Chinese tech company will build a city-level intelligent platform, serving areas such as communities, office buildings, supermarkets and parking lots.

Dubbed "AI City," the platform will cover fields including energy, traffic, security, firefighting and retail, said Victor Ai, founder and CEO of Terminus Group, at a conference in Beijing on Wednesday. Enditem

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