The Chinese Aerospace Science and Technology Corporation (CASC) recently completed a series of five engine tests in Beijing and Laiyuan, Hebei Province, marking a notable achievement for China's aerospace industry. These tests are crucial steps in the development process of rocket engines, essential for various missions throughout different stages. Among the successful tests was the evaluation of an upper-stage hydrogen-oxygen engine, which demonstrated smooth operation during the ground calibration test run. Xia Wei, a professional from CASC, highlighted the importance of these tests in assessing overall coordination and performance parameters. The tests also included evaluations of the main propulsion engine, upper-stage engine, and attitude-orbit control engine, along with a test run of a liquid-oxygen methane engine. The efficiency of these tests allowed China to complete five engine evaluations in a single day, showcasing the nation's prowess in rocket technology. Looking ahead, CASC has plans to conduct further research and testing on various engines in 2025 to support deep space exploration and the development of heavy rockets. This successful series of tests sets a strong foundation for China's major space projects and reinforces the country's commitment to advancing its capabilities in space technology.