China has made significant progress in hydrogen aviation by conducting a groundbreaking 30-hour continuous flight test of a hydrogen-powered drone. Developed by AVIC and Tsinghua University, the test took place in Dujiangyan, Sichuan Province, marking a global endurance record for UAVs in its category. The drone, weighing 50 kilograms, stands out for its utilization of fuel cells with a remarkable energy density of 600W/kg. Researchers at Tsinghua University managed to enhance system efficiency to 55% by employing a lightweight stack design and low platinum-loaded catalyst technology, successfully addressing stability issues in challenging environments like plateau low pressure and extreme cold. The successful flight opens doors to various applications for hydrogen drones, including natural disaster rescue missions, emergency communications, environmental monitoring, and border patrol. This achievement not only highlights China's technological advancements in the aviation sector but also paves the way for the integration of hydrogen-powered drones in critical operations.