Kuai Rong felt that from the very start, Yan Jin had intentionally concealed his true strength. Facing Su Ming's attacks, Yan Jin assumed a stance of defense, defending continuously.
Relying on the power of the defensive Acquired Spiritual Treasure, he continuously endured Su Ming's attacks. This wasn't a tendency towards masochism, but rather, this person intended to lull Su Ming into a false sense of security. This strategy indeed succeeded.
When Su Ming had fully revealed his attack methods and his guard was somewhat lowered. Yan Jin then employed the Nihility Divine Ability, flashing before Su Ming, leaving him no time to react. It wasn't that Su Ming suddenly became a simpleton forgetting he was in a battle, but the Nihility Divine Ability was simply too abrupt.
It all happened in an instant.