When the sword is inseparable from the body, style and the body both blossom.
While this was something Father Chen had made up, it wasn't something he randomly said: after all, parodies shouldn't be nonsense, and adaptations shouldn't be groundless
In senior high school, sword skills and body techniques were taught as part of the PE class under the direction of PE teachers, while the university curricula was more comprehensive.
In the Alliance of Ten Thousand Cultivation Schools' study plan, students had to master the basic use of a weapon before senior high, and that weapon was a sword.
All "swords" were the same in essence, and being able to master sword fighting would also help in the use of some other weapons.