A fire-fighting helicopter which is on a mission to battle a forest fire in Muli County in Liangshan Yi Autonomous Prefecture takes off from an airport in Xichang, southwest China's Sichuan Province, April 1, 2019. Twenty-six firefighters have been confirmed as having died while battling a forest fire in southwest China's Sichuan Province, authorities in Sichuan's Liangshan Yi Autonomous Prefecture said Monday. (Xinhua/Lin Jiping)