Aircraft were different from flying swords.
Flying swords were convenient and fast, you just gotta prepare a flying sword and chant the sword formula, creating a layer of light above the flying sword. Thereafter, you just gotta step on it and fly however you want!
Flying horizontally, flying vertically, flying backwards, flying upside down, it didn’t matter. Additionally, regardless of whether it was windy or rainy, or if there was lightning or snow... none of that would affect the flight of the flying sword.
But it was different for an aircraft…
An aircraft was greatly affected by all kinds of external environmental factors; apart from those, there were also rules set by human beings that restrained the freedom of the flight of an airplane.
Song Shuhang and Senior White were both sitting in the classroom, listening to the instructor explaining some of the basic knowledge with regards to piloting an aircraft.