The ongoing 15th China International Aviation and Aerospace Exhibition in Zhuhai has highlighted China's significant role in driving the development of the hydrogen energy industry chain through its expertise in rocket engine technology. At the exhibition, a detailed simulation showcasing various stages of hydrogen production, storage, and utilization attracted a large audience, underscoring the country's progress in this sector. Wang Feng of China Aerospace Science and Technology Corporation emphasized the historical utilization of hydrogen in rocket engines, leading to advancements in carrier rockets and the subsequent transition of technology to the hydrogen energy field. As China focuses on achieving cleaner energy structures, the demand for clean fuels like hydrogen continues to rise, making the hydrogen industry chain's development crucial. The intention to transfer rocket engine innovations to civilian applications reflects a strategic move to enhance technological prowess, improve capabilities, and drive down costs. Wang also revealed China's current and future capacity for liquid hydrogen production, signaling a commitment to expanding hydrogen production capabilities for sustainable energy use.