Originally, although Qing Yu possessed the Xuanyin Twelve Swords, his Sword Dao cultivation was not sufficiently matched to his prowess. His Sword Dao cultivation fell far short of his current power.
But after receiving Guan Qi's Martial Arts Enlightenment, it was a completely different story. The "Innate Invisible Sword Qi" combined with the Xuanyin Sword Energy was virtually invincible, and he could wield it as easily as moving his arm.
Previously, when Qing Yu used the Xuanyin Twelve Swords, he dominated by refining the Sword Qi and by having a temperament that matched the Xuanyin Su Sword. With Qing Yu's Mental State Cultivation, simulating the compatible temperament wasn't a problem at all.
And now, his Sword Dao cultivation was able to match his power, and his power had greatly improved after a period of closed-door cultivation compared to before. Such a powerful Qing Yu was beyond comparison to Bai Jiangshan, this intelligence agent.