Will there be lightning in the sky?

No, the current jet plane flies at an altitude of 9 146 meters or 10668 meters, and there will be no weather phenomenon at this altitude. The stratosphere, jet business jets, commercial airliners and civil airliners all fly in the stratosphere. When helicopters encounter thunderstorm clouds, they have to fly around, because the air above 8000 meters is thin, so they can't climb, so they have to fly around, because helicopters are typical low-altitude aircraft. Other jets can fly 9 146m, 10668m,1000 m, 12000m, 12600m, and domestic routes are 9 12. The international air route is at 12000m or 12600m, and the flying height of general aircraft is at 9 146m or 10660m → 15000m. The height of this interval is the stratosphere, flying above the clouds, and the general cumulonimbus clouds are between 600m and 9000m m. The plane should hover in the stratosphere and wait for notice. If it doesn't improve, you can only fly to an airport with good weather or return to China. It can't descend because there are low-altitude wind shear, lightning strike, charged rain fog and low visibility under the cumulonimbus cloud, so the plane must fly above the cumulonimbus cloud. The height of the top of the cumulonimbus cloud is 9000 meters, so the plane flying above 9000 meters, that is, flying above the cumulonimbus cloud will not be struck by lightning. Clouds are distributed in the troposphere below 9000 meters.