Actually, what Magnolia knew was only a small part of his understanding of the profound strength within his Internal Strength.
What she did not know was that in a strict sense, the ice shield on William's body did not belong to the Internal Strength.
The Mysterious-strength of Internal Strength really needed to be at the Transforming Strength stage before it could be activated.
Some people's aptitude was even not bad. They would not be able to activate the Internal Strength until they grew old, and they would have to meet with all sorts of opportunities.
However, there was an exception to this.
That was possessing an supreme bloodline.
People who possessed an supreme bloodline could start the bloodline awakening first by transforming strength and awake a different Internal Strength and Mysterious Power.
Just like white Felicity, just like Flavia.