Core Viewpoint - The Shenzhou-20 manned flight mission is progressing with the initial sample development and testing of various systems, including the lunar suit and crewed lunar rover [1] Group 1: Mission Progress - The initial sample development work for the lunar suit and crewed lunar rover is underway [1] - Major large-scale tests and cross-system tests are being steadily advanced [1] Group 2: Testing and Validation - Previous tests include the comprehensive matching test of the Long March 10 rocket's electrical system, the first high-altitude air drop test of the Mengtian crewed spacecraft, and the thermal test of the lunar lander [1] - Upcoming tests will take place at Jiuquan and Wenchang launch sites, including zero-height escape tests for the Mengtian spacecraft and comprehensive landing and takeoff verification for the lunar lander [1]