Mo Hua pondered for a moment, then answered:
"I felt that the power of a single Fireball Technique wasn't sufficient, so I wanted to 'fuse' two Fireball Techniques together to enhance the power, and then... it exploded..."
The Elder of Daoist Law frowned, "Nonsense, who does 'fusion' like that?"
Mo Hua replied humbly, "Then how should one fuse them?"
"You've misunderstood," the Elder of Daoist Law shook his head. "So-called spell 'fusion' isn't about mixing two spells together like dough..."
"Spell fusion is essentially the fusion of skill patterns."
"Moreover, it's not about fusing after casting; rather, it's about having a 'fused' skill pattern before even casting. It just appears as if it's 'fusing'..."
Mo Hua had an epiphany.
He remembered how Grandpa Gui showed him the Fireball Technique, consecutively condensing the fire threads and then weaving them to form the spell.
Essentially, it wasn't about merging several Fireball Techniques.
Rather, it was in itself a complete, separate spell.
He had practiced according to Grandpa Gui's method, but because of working behind closed doors, he had gotten a bit sidetracked amidst the confusion...
Even though he'd veered off course, the power seemed very strong...
It was even stronger than he had imagined...
Why was that?
Mo Hua blinked and glanced at the Elder of Daoist Law.
The Elder of Daoist Law felt a bit uneasy under Mo Hua's gaze, wondering what schemes the boy was concocting in his mind...
"Elder..." Mo Hua spoke softly, "Suppose there is a possibility..."
"That there are two 'twin' Cultivators, with identical Divine Sense and Spiritual Root, casting the exact same spell..."
"There are no such 'twin' Cultivators..." the Elder of Daoist Law said.
"I mean suppose..."
Mo Hua said earnestly, "...If there were, what would happen when their spells collided? Would they fuse?"
Mo Hua was full of curiosity.
The Elder of Daoist Law felt a headache coming on; he dreaded encountering disciples with such wild imaginations and bizarre questions.
Their questions had some logic to them.
But to answer them was truly taxing on Divine Sense.
The Elder of Daoist Law massaged his forehead and, following Mo Hua's train of thought, pondered for a moment before slowly speaking:
"If their Divine Sense and Spiritual Root are identical, then those two spells might not be exactly the same due to the sequence in time..."
"For a Cultivator, time is also a kind of Law."
"The moment of spellcasting, like the configuration of the spell's Spiritual Power, is an inherent characteristic. It's just that most Cultivators completely overlook this point..."
"Then let's say the timing of the spellcasting is also exactly the same..." Mo Hua said.
"In that case..." the Elder of Daoist Law murmured, "then these two spells would be nearly identical, sharing the same origin. If they came into contact..."
"There would be two possibilities..."
The Elder of Daoist Law speculated based on the principles of spells:
"Either they would instantly 'fuse' into a large fireball..."
"Or they would be in a state where they are close to each other, not exploding, yet not fusing, a sort of 'attraction and repulsion'..."
"Like the Taixu's Eryi, coexisting yet repelling each other..."
Mo Hua's eyes sparkled with admiration.
As expected of the Elder of Daoist Law from the Taixu Gate, able to deduce the reality with just the theory of spells.
"What if these two fireballs are 'attracting and repelling' each other but not fusing?" Mo Hua asked again.
"Well..." the Elder of Daoist Law had barely started speaking when he suddenly paused, "How do you know?"
Because I've tried it!
And I hurt myself in the process!
Mo Hua silently said to himself.
But it was not the sort of thing he could openly discuss, so he equivocated, "I guessed..."
Before the Elder of Daoist Law could regain his composure, Mo Hua continued to press with his questions, "If that's the case, why would there be repulsion?"
Indeed, the Elder of Daoist Law continued down the path of Mo Hua's line of thought...
"Because the essence of their skill patterns is different."
"The structure of the skill pattern is the structure of the spell's Spiritual Power; it's the essence of the spell."
"Skill patterns naturally repel one another."