He then pulled out half of a spiritual vein jade marrow.
As he stared at the jade marrow in his hands, it looked somewhat dull since it had previously helped him expand his Spiritual Sea to ninety-nine feet.
"I'm at this stage; I have to at least break through to the second level of the Spiritual Sea Realm," he muttered to himself.
He then went back to his training, slowly refining the jade marrow in front of him.
As he refined it, the tempest within his sea of spiritual power grew even stronger.
Time passed by slowly.
In the blink of an eye, four days had passed.
From Jiang Yuan's body came the sound of rolling waves. The surface of the sea stirred, causing great waves and surges.
Although the diameter of the Spiritual Sea remained at ninety-nine feet, its quality was utterly different now.
Every bit of spiritual power he had increased over these days had fused into this ocean.
After continuous accumulation, it had reached a limit, the limit that this realm can accumulate.