As a Master, It's Normal to Open the Sky with One Sword, Right?

"Master, I am already a great master, why can't I see through your strength?" "Master, we have been following you for so long, and we have never seen your full strength." "Master, can you show your skills for our brothers and sisters today?" Looking at the people on the side, Gu Li chuckled, raised the sword in his hand, and said lightly: "The name of this sword is Kaitian." The sword light fell, and the sword opened the sky!