Li Su looked utterly miserable. His injuries were fairly severe, and the expenditure had been enormous.
He was, after all, only at the Great Perfection of True Immortal. The Seven Supreme Sages' method consumed an immense amount. The Four Immortal-Slaying Swords had not even formed an array; he had only unleashed three swords, yet they had nearly drained him dry.
Though their power was immense, their consumption was truly staggering as well.
He could not keep fighting.
The gap of a major realm—although it looked as though they had fought to a draw, Li Su was actually like a silver spear with a wax shaft, unable to withstand any more strain.
The situation on the other side was not good either. The ancient city had endured far too many years without receiving any repairs. For it to remain this formidable even after being worn down to its current state was already horrifying.
Of course, even so, Li Su still had no intention of continuing the fight. He could not gauge the other party's limits. Although the cracks on the red armor had increased, it had not sustained any particularly grave damage. Moreover, it was not flesh and blood, but an artifact. So long as it was not completely destroyed, it could still wield its power.
Risking his life against an artifact like this simply was not worth it, nor was there any need.
After all, even if there truly were some good treasure to be won by defeating it, Li Su could simply leave, cultivate for a while, break through the True Immortal realm, and attain the power of Taiyi. Why risk his life?
With that thought, Li Su immediately retreated, no longer intending to clash head-on with the thing.
The gap of a major realm was simply too much