Chinese deep-sea manned submersible Jiaolong came back to its home port in Qingdao on Wednesday after a scientific expedition lasting nearly 100 days to the Yap Trench and Mariana Trench in the west Pacific Ocean.
A Chinese deep-sea explorer ship, Zhang Jian, set sail on Tuesday from Shanghai to the South Pacific for scientific research.
Doctors in Beijing have used 3D printing to create a new spine for a man who risked being left quadriplegic after five cancer-riddled vertebrae needed to be removed from his body. The procedure is a world first in terms of the length of vertebrae replaced this way, the doctors say.
Y-20, China's homegrown large transport aircraft, officially joined the People's Liberation Army Air Force on Wednesday.
China will put another 14 weather satellites into service by 2025, up from the current seven, in a bid to better monitor weather patterns to benefit society.
China's rising technological innovations helped brighten its image overseas last year, according to a report released by Xinhua News Agency on Thursday.