The most difficult part of the Three Immortal Swords was the three forces delivered with one strike. It was hard and soft at the same time. It had three different ways of utilizing the forces and three different concepts.
One needed to combine the three forces and concepts ingeniously to be able to use the Three Immortal Swords well. If they didn't do it well, not only would they fail to achieve the effect of defeating the enemy, but they would only fall flat on their face. It would be a good outcome if they weren't injured, much less injure the enemy.
Uesugi Nao had trained for so long to master the Three Immortal Swords. How could someone who had never seen the Three Immortal Swords teach her?
Uesugi Nao's goal for demonstrating this sword technique was to embarrass Zhou Wen. She wanted to let him know who was truly weak.
As no one had seen the Three Immortals Swords, Uesugi Nao wasn't afraid of being recognized.