BEIJING, Sept. 26 (Xinhua) -- The following is a summary of published science and technology news of China:

LUNAR LAVA TUBES

Chinese researchers are studying the possibility of setting up a safe, stable and long-term shelter in lunar lava tubes.

During Moon's early days, when the upper layer of lava flow cooled and hardened, molten rock may have continued to flow beneath, forming relatively stable and flat hollow pipe-shaped tunnels.

With years of geological activities, impact events and moonquakes, some shallow lava tubes formed accessible "skylights" after collapsing, opening the door to explore the underground world of the Moon, said Zhang Chongfeng from the Shanghai Academy of Spaceflight Technology.

OPEN-SOURCE OPERATING SYSTEM

HarmonyOS 4, the operating system developed by Chinese telecom giant Huawei, now has more than 60 million users, the company said on Monday.

"Just a few days ago, HarmonyOS 4 had about 50 million users, and the figure has now surpassed 60 million, with about 1.2 million new users added every day," Yu Chengdong, the company's executive director and CEO of its consumer business, said during a product launch event held on Monday in Shenzhen, south China's Guangdong Province.

HarmonyOS, or Hongmeng in Chinese, is an open-source operating system designed for various devices and scenarios, including intelligent screens, tablets, wearables and cars. It was first launched in August 2019.

ELECTRONIC INFORMATION ENGINEERING

The Chinese Academy of Engineering (CAE) issued a report on Monday on the development of electronic information engineering in China, outlining 14 major challenges in the future development of the sector.

According to the report, the 14 major challenges lie in the areas of digitalization, informatization, optical engineering, networks and communications, cybersecurity, computer systems and software, marine network information system, among others. Enditem

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