天问二号，5月29日发射！

Core Viewpoint - The article discusses the ongoing preparations for the launch of the Long March 3B Yao-110 rocket at the Xichang Satellite Launch Center, highlighting the completion of various technical and operational tasks related to the Tianwen-2 probe and the rocket itself [1][3]. Group 1 - The Long March 3B Yao-110 rocket is in the process of propellant loading as part of the launch preparations [1]. - The Tianwen-2 probe has successfully completed several key stages, including assembly, testing, propellant loading, and functional checks [3]. - The launch site has conducted system integration exercises involving multiple control centers and measurement stations to ensure coordinated operations [3].