Attendees wear three-dimensional glasses to watch the first batch of three-dimensional images based on the data from the Gaofen-7 Earth observation satellite during the launching ceremony in Beijing, capital of China, Dec. 10, 2019. The China National Space Administration Tuesday released the first batch of three-dimensional images based on the data from the recently launched Gaofen-7 Earth observation satellite. (Xinhua/Shen Bohan)