Qin Wentian's cultivation base broken through to the mid-stage of the immortal king realm. However, he was at the initial-phase of it.
In these seven years, he had experienced the initial awakening of his bloodline potential and he had gained some control over his bloodline power, created new innate techniques, established new law domains. All these improvements were considered extremely vast, he definitely had improved faster here in comparison to if he chose to cultivate alone elsewhere.
He used a mere short seven years to enter the mid-stage of the immortal king realm and this could be considered a miracle of sorts. Even he himself hadn't expected that he would be able to do so.
He continued to cultivate and comprehend the insights, quietly solidifying his foundation.