According to Deng Jinghui, a Chinese helicopter expert, the test pilot drove the Z-20 into the icy clouds in order to test the flying conditions of the Z-20 due to the lack of aerial ice-making equipment. At the beginning, multiple devices on the plane gave alarms one after another, “heart speaks to the throat”; after the crisis was resolved, the test pilot took the initiative to ask for several more tests, considering the rare opportunity. In the end, he brought back extremely valuable data! pay tribute!