These spirit beasts have basically exhausted their previously accrued foundation. It's unlikely they could advance any further in a short amount of time.
Take Da Fu as an example.
Wang Ba doesn't know much about Da Fu's bloodline, so he can't even think of how to help it break through in a short period of time.
"We can indeed assist with a Lifespan Breakthrough, but the difference between a Class III upper grade and a Class III top grade is not significant. It's better to save the opportunity for its breakthrough to a Class IV."
After all, he only has one chance.
"Next, the preparation for rushing to the Golden Core stage begins."
Wang Ba seriously pondered in his heart.
Instead of immediately engrossing himself in cultivation, he decided to set all the gains from his recent mission in order, mainly those from the cultivators of the Tupi Continent.