Chinese engineers began plans for the Chang'e-1 lunar probe in the 1990s, when Sun joined the team. China only had a monitoring system for near-Earth satellites, and communication with the moon at a distance of 380,000 km was still a big challenge.
July 8, 2019For over three decades, Zhang Liming has been working on emergency power line repair, and he found fulfillment in the job.
June 7, 2021Power maintenance engineer Zhang Liming, 52, is a well-known figure in Tianjin due to his dedication to maintaining communities' electricity supplies for more than 30 years.
May 7, 2021