The connection between the small world and the Heavenly Dao River Tributary had originally been within the Spirit Pearl Space model, but it had now naturally shifted into the secret realm.
However, a secret realm that had not undergone special treatment could not block the infiltration of Heavenly Dao Power and Law Power.
The other areas of the small world would not be greatly affected.
Thereafter, while cultivating, Wang Daoyuan continuously poured his immortal power into the Spirit Pearl Space model, helping it grow.
After spending a thousand years within the Spirit Pearl Space, his cultivation had improved considerably once more.
More than three thousand Mahayana dead warrior clansmen had already been raised within the small world, providing immense assistance to Wang Daoyuan's cultivation.
Unfortunately, in the True Immortal Realm, every step led to a different heaven.
Each additional Dao he opened increased the difficulty severalfold.
Not only that, but opening a new Dao would also greatly increase the pressure borne by his immortal body.
During this period, he also needed to rapidly strengthen his physical body.
After Wang Daoyuan opened his second Dao, the speed at which he opened his third Dao had clearly slowed.
There was still quite a gap before he could open his third Dao.
Even if he forcibly opened it, his immortal body might not be able to withstand it.
If not for that, he would not have needed to rush to merge the small world with the Spirit Pearl.
He would only need to cultivate step by step, and before long, he could reach the realm of a Ten Dao True Immortal.
The Spirit Pearl was his true body. After merging with the small world, it could help him bear the pressure of the Heavenly Dao River.
After the fusion, he would no longer