BEIJING, May 18 (Xinhua) - A subway line in central China has been covered by 5G networks of the country's top three telecom operators, sources said.

File photo: VCG

This is the first such attempt across the country, according to China Tower, China's telecommunication tower infrastructure services provider. Average downloading traffic speed reached 700 Mbps at the Line 5 subway station in Zhengzhou, the capital city of Henan Province.

The successful implementation by China Mobile, China Union and China Telecom in Zhengzhou is expected to offer a reliable reference for such practices of Chinese and global telecom operators.

China's telecom operators have been stepping up investment in the development and applications of 5G technologies to gain a foothold in the emerging market.

Friday marked the World Telecommunications Day and the World Information Society Day, which fall on May 17 every year.