Core Points - The Shenzhou-20 manned mission is scheduled for launch on April 24, 2023, at 17:17 Beijing time, with a crew consisting of Chen Dong, Chen Zhongrui, and Wang Jie [1][2] - This mission marks the fifth manned flight during the space station application and development phase and the 35th flight of the manned space program [2] - The primary objectives include crew rotation with the Shenzhou-19 crew, conducting scientific experiments, and performing extravehicular activities [2][3] Mission Details - The Shenzhou-20 spacecraft will utilize an autonomous rapid rendezvous and docking mode, docking with the Tianhe core module approximately 6.5 hours after launch [2] - The crew will stay in orbit for about six months, during which they will receive visits from the Tianzhou-9 cargo spacecraft and the Shenzhou-21 manned spacecraft [2] - The Shenzhou-19 crew is scheduled to return to Earth on April 29, 2023, after completing the crew rotation [2] Scientific Experiments - The mission will focus on three life science experiments using zebrafish, planarians, and streptomyces [3] - The zebrafish experiment aims to study the effects of microgravity on protein homeostasis and its role in bone loss and cardiovascular dysfunction [3] - The planarian experiment will investigate regeneration mechanisms, while the streptomyces study will explore microbial activity in space for potential applications [3] Lunar Mission Progress - The development of China's manned lunar mission is progressing smoothly, with various components such as the Long March 10 rocket and the Dream Chaser spacecraft undergoing initial testing [4] - Major tests for the lunar mission are being conducted, including comprehensive matching tests for the Long March 10 rocket's electrical systems [4] - Future tests will include zero-height escape tests for the Dream Chaser spacecraft and comprehensive landing and takeoff verification for the lunar lander [4] Astronaut Training - The training for the fourth batch of astronauts is proceeding as planned, with Hong Kong and Macau astronauts expected to participate in their first flight missions by 2026 [5]

Core Viewpoint - The Shenzhou-20 manned mission is set to launch on April 24, 2023, at 17:17 Beijing time, with a crew of three astronauts, including Chen Dong as the commander, marking significant progress in China's manned spaceflight capabilities [1][2]. Group 1: Manned Spaceflight Progress - The Shenzhou-20 crew consists of two pilots and one flight engineer, with Chen Dong becoming the first astronaut from the second batch to fly three times, while Chen Zhongrui and Wang Jie are set for their first flights [2]. - China has successfully conducted 20 extravehicular activities (EVA), demonstrating advanced technology and capabilities in this area, reaching an international advanced level [2]. Group 2: Lunar Mission Developments - The development of China's manned lunar mission is progressing smoothly, with the Long March 10 and Dream Chaser spacecraft undergoing initial testing as planned [2]. - Major tests for the lunar mission, including the Long March 10 electrical system matching test and the Dream Chaser's first high-altitude drop test, have been completed [2]. Group 3: Extravehicular Activity Achievements - Key technologies verified during EVAs include spacesuits, airlock operations, robotic arm assistance, and ground support for extravehicular activities [3]. - Successful assembly tasks were completed outside the space station, including the installation of external pump groups and support rods, achieving the complete design functionality of the space station [3]. - The first extravehicular maintenance was conducted to repair damage to the solar wing cables caused by space debris, restoring power generation capabilities [3]. - Proactive measures for space debris protection have been implemented, enhancing the space station's ability to respond to debris threats through multiple inspections and installations of protective devices [3].