The Lagos-Ibadan railway in Nigeria, the first double-track railway built to Chinese standards in West Africa, went into trial operation on Dec 7.
An oceangoing geophysical research ship was added to China's fleet of marine research vessels on Dec 18. It is the country's first scientific research vessel focusing on geophysical exploration.
China's Chang'e-5 probe retrieved about 1,731 grams of samples from the moon, according to the China National Space Administration.
Construction of the second phase of vibro-replacement stone columns of the Lawa hydropower station's cofferdam foundation over the Jinsha River in Southwest China's Sichuan province is now underway.
A new model of the Fuxing high-speed train ran to Xi'an, Shaanxi province, on Dec 15, getting ready for operation on the Xi'an-Yinchuan high-speed railway.
The Wufeng Mountain Yangtze River Bridge in East China's Jiangsu province, the world's first suspension bridge for high-speed trains, opened for traffic on Dec 11.
The last section of the world's longest desert highway, the Beijing-Urumqi Highway linking the capital and Northwest China's Xinjiang Uygur autonomous region, is ready to open to traffic.
As the Chang'e-5 probe brings moon samples back to Earth, Chinese scientists are expecting another package from the space trip: a variety of plant seeds that may bring bigger harvests.
Chinese train maker CRRC Changchun Railway Vehicles Co Ltd on Dec 15 rolled out a new type of middle-to-low-speed magnetic-levitation train.
China Mobile Communications Group Co., Ltd.(China Mobile) and Tianjin signed an agreement on Dec 10 to promote the coordinated development of the Beijing-Tianjin-Hebei region and build Tianjin into a 5G-based city.
An online open day event at the Chaglla hydroelectric power plant in Peru was held by China Three Gorges Corporation (CTG) on Dec 16.
China's space-tracking ship Yuanwang-5 returned to port on Dec 14 after completing three monitoring missions in the Pacific Ocean.