Zhangjiagang city in Jiangsu province, China, is at the forefront of the country's hydrogen energy revolution. With a robust manufacturing foundation, the city has established a comprehensive hydrogen industry ecosystem that encompasses production, storage, transportation, and application. Hydrogen-powered vehicles, including buses and port tractors, are actively deployed in the city, showcasing the versatility and environmental benefits of hydrogen. The integration of hydrogen-solar smart microgrids has led to innovative renewable energy solutions. China's focus on promoting high-quality development in the new energy storage sector, particularly in ultra-long-duration hydrogen storage technologies, further emphasizes the importance of hydrogen in the country's energy transition. Policy incentives and initiatives at both the provincial and national levels are driving the adoption of hydrogen-powered transportation, with measures aimed at reducing costs and accelerating infrastructure development. The growth of renewable hydrogen production capacity in China highlights the nation's commitment to scaling sustainable energy solutions. Zhangjiagang's position as a leading hydrogen hub with over 40 hydrogen-related enterprises and a well-established industrial chain underscores the city's pivotal role in advancing hydrogen technology. With a strategic advantage in high-pressure vessel production and support from key manufacturers, Zhangjiagang is poised to lead China's hydrogen energy sector towards a cleaner, low-carbon future.