Seriously speaking, the Unparalleled Halberd King's strength wasn't fully displayed, because he didn't even have a chance to demonstrate it, being firmly suppressed from beginning to end.
If it had been a regular match, Shi Xiaole might have given him a chance, but the situation didn't allow him to pull his punches. Although on closer examination, Shi Xiaole was far from serious.
"The might of the Unparalleled Halberd King should be close to, or perhaps at the level of an Invincible Earth Immortal. My power is roughly three times that of an Invincible Earth Immortal."
After the battle, Shi Xiaole had a much deeper understanding of his own prowess. If those present at the scene knew what he was thinking, they would undoubtedly call him crazy.
One must know that there are several benchmarks for an Invincible Earth Immortal.