The people of the Emei Sect originally did not want to gang up in an attack, believing that the Purple Ying Sword and Green Rope Sword were unparalleled weapons and that no other flying swords in the world could surpass them. When combined as the Purple and Blue Double Swords, they were considered invincible.
They had no interest in winning with numbers, fighting two against one, as the properties of the fused Purple and Blue Double Swords meant that whether facing one opponent or a hundred, it was all the same.
However, they soon realized that something was wrong!
Certainly, in terms of flying swords alone, the Heavenly Demon Immortal Slaying Sword was no match for the combined Purple and Blue Double Swords, nor even for either of them individually.
