Two Country Bumpkins

How could Zeuss not be excited?

The Mana Seed was the first step for a person to be called a mage. No one, not even eventual Heaven Mages, could skip this step!

Only those with a Mana Seed could become a mage!

At first, the Mana Seed could barely hold any mana. It would be so little that many would say that a Magic Apprentice's mana was negligible.

But once the Mana Seed expanded, it would become something familiar to all mages.

A Mana Whirlpool!

As the Mana Whirlpool expanded, it would evolve into the Magic Conducting Runes, and most things mages would fuse later on, such as Core Meditation Law Set, would be fused with Magic Conducting Runes. 

No matter how powerful a mage was, in the end, everything evolved from the Mana Seed.

This was the start of everything, a very small Mana Seed that could be burnt out by the wind like a weak flame.