Zhao Feiyan, being the granddaughter of the Yin-Yang Venerable, naturally had some trump cards up her sleeve to help her escape life-threatening situations.

Seeing that she couldn't defeat Mu Wuxin, Zhao Feiyan waved her hands, and a powerful saber aura gathered from within her body, transforming into a massive saber three to four zhang long, suspended in the air.

The blade of the saber was black on one side and white on the other, embodying yin and yang, exuding a formidable saber force.

"Mu Wuxin, I admit you're strong, but this is the saber aura my grandfather left within me. It contains a Seventh Heaven saber force, and once activated, even Profound Realm experts can't withstand it!"