Core Viewpoint - The successful launch of the Long March 3B rocket carrying the Yuanwang-1 upper stage and the Shiyan-29 satellite marks a significant achievement for China's space exploration efforts, focusing on space environment detection and related technology experiments [1][3]. Group 1 - The Long March 3B rocket and Yuanwang-1 upper stage are a four-stage rocket system developed by the China Aerospace Science and Technology Corporation [3]. - This launch is the first collaboration between the Long March 3B rocket and the Yuanwang-1 upper stage in over nine years, following the successful launch of China's 21st BeiDou navigation satellite in February 2016 [3]. - This mission represents the 592nd launch of the Long March series of rockets, highlighting the extensive experience and capability of China's space launch vehicles [3].