He didn't use a sword, he only used his fists. After advancing to the Heavenly Human Realm, the moves of the Mystical Iron Nine Swords had become second nature to him, so much so that he could easily execute them with his fists.
Boom... Boom... Boom...
The continuous loud booms, accompanied by relentless tremors, left everyone and every demon in the underground base at the foot of the Circular Mountain utterly dumbfounded.
They knew Ji Tianqi was strong, but they had primarily focused on his swordsmanship and flying sword skills. When it came to physical strength, Ji Tianqi was powerful, but there was a notorious incident in the past when he had been injured by a Legendary-Level physical side Superpower User, Harres.
"How could he possibly be this strong?" the Titan King exclaimed, feeling the pressure.
"I knew he had grown stronger, all those Demon Cores, he must have consumed them all."
"He's human, he can't just consume an unlimited amount of Demon Cores."