On July 21, patients at the Fuwai Central China Cardiovascular Hospital in Zhengzhou's Zhongmu county were besieged by floods. However, due to the complex conditions, most of the rescue teams could not reach the hospital.

The next day, in the early afternoon and under the guidance of the Ministry of Industry and Information Technology, a Wing Loong Unmanned Aerial Vehicle, equipped with China Mobile's wireless communication base station, took off from Anshun Huangguoshu Airport in Guizhou province en route to the hospital to provide network protection for the rescue work. With these combined efforts, a safe channel was finally opened, and 1,075 patients were successfully transferred by helicopter and kayak.