Inside the space.
Ye Yuan pondered the source of that unknown energy.
If it had come from the golden bamboo, Ye Yuan found it somewhat hard to believe.
After all, the golden bamboo was at least a hundred nautical miles away from his current position.
If he could still absorb its energy from such a great distance, that would be rather hard to explain, wouldn't it?
Since the Blue Stone Blocks were right here, why not give them a try?
So he reached out and picked up a stone block.
After holding it in his palm, he closed his eyes again.
As Ye Yuan circulated the Water Control Art once more,
he clearly felt that cool energy entering his body through his palm.
That was it!
The energy capable of restoring Mental Power came from the stone block in his hand.
He had never expected that an accident would lead him to discover the use of the Blue Stone Blocks.
What was even more incredible was that
this was actually something that could increase his Mental Power.
Ye Yuan had plenty of resources.
But aside from time, the only things capable of increasing his Mental Power were the Thumb Eels the system had rewarded him with before.
To increase his Mental Power, Ye Yuan had eaten so much of the stuff that he was nearly sick of it.
Although Thumb Eels tasted quite good,
if someone ate them every day, even the most delicious food would eventually become tiresome, wouldn't it?
Now things were better. He had another item that could increase his Mental Power.
And judging by the number of Blue Stone Blocks, they were more than enough for his cultivation needs.
One had to know that Ye Yuan had put considerable effort into searching for items that could