载人登月，要过几道关？

Core Viewpoint - China aims to achieve its first manned moon landing by 2030, with significant progress in the development of the "Dream Boat" spacecraft and the "Moon Catcher" lunar lander [1][10]. Group 1: Manned Moon Landing Mission Overview - The mission involves launching two rockets to send the lunar lander and crewed spacecraft to a translunar trajectory, followed by docking in lunar orbit and landing on the moon [4][14]. - The lunar mission is expected to enhance scientific innovation and technological advancement, with a projected return on investment of 1:15 for space engineering [3][6]. Group 2: Technical Challenges and Solutions - The rockets must have a payload capacity of at least 27 tons for the mission, necessitating the development of the new Long March 10 series rockets [6][7]. - The "Dream Boat" spacecraft is designed to accommodate up to seven astronauts and features advanced safety systems for emergency situations [10][11]. Group 3: Lunar Landing and Operations - The lunar lander "Moon Catcher" will serve as the operational center for astronauts on the moon, supporting their activities and scientific investigations [12][13]. - Astronauts will face challenges such as extreme temperatures, vacuum conditions, and complex terrain during their lunar activities [11][12]. Group 4: Return Journey to Earth - The return phase involves a complex "space skipping" maneuver to ensure a safe re-entry into Earth's atmosphere, requiring precise navigation and thermal protection [15][16]. - The mission aims to collect lunar samples and safely return them to Earth, marking a significant milestone in China's space exploration efforts [15][16]. Group 5: Future Exploration Plans - Following the manned moon landing, China plans to establish a lunar research facility and conduct continuous lunar exploration and technology validation [16][17].