As for him and Clara, they weren't even able to pass through the spatial border, making him think in this way.

"Could it be that we have to reach or stay in a particular cultivation base to pass through this place?" Clara mused as she looked at Davis.

Davis turned to look at Clara as a particular glint flashed through his eyes. A feeling of enlightenment even tugged his instinct as if her words made extreme sense.

Unlike him, she thought from a different perspective which made him appreciative of her input.

"So this means that we should be in either at the extreme low like a mortal or at a certain cultivation base to enter this place?" Clara shared her opinion.

Davis pondered for a while before nodding his head, "What you stated could be true."

"However, there are still eleven places to check..."

"There are still eleven mysterious places like that?" Clara spoke in a dumbfounded tone.

Davis acknowledged, "We'll head to those places and see if it's the same situation."

Clara responded with a hum and they promptly left to the closest of the other eleven places.

They traveled by utilizing their full speed and just when they were near the mysterious place...

"What's that?" Clara squinted her eyes as she looked at the dot that was a few hundred kilometers away from them.

"Fighter jets..." Davis lazily replied.

"Fighter jets...? For a mortal's flying boat, its speed is extremely marvelous but is extremely lacking in offense and defense..." Clara simply spoke out her true thoughts as she probed with her Soul Sense.

Davis had seen flying boats and floating wagons or carriages in the Royal Xuan Capital but he was confused as to why Clara would know about it since flying boats didn't seem to exist in the Grand Sea Continent.

'Ah yes, there must be a treasure of that type in the Phoenix Immortal Inheritance... Or mother should have told stories about the First Layer.' He assumed and let go of that thought.

They were in the airspace above the North-Western part of India.

Soon, the tiny dot divided into many dots in the far skies as it turned bigger and clearer, and four fighter jets appeared in their vicinity as they flew past them with an extremely noisy whoosh sound.

"It's making too much noise while trying to break through the wind..." Clara commented in an annoyed tone, however, she could see that these 'fighter jets' were faster than their maximum flying speed.

Davis inwardly chuckled and sensed those fighter jets take a reverse maneuver before they followed them on their trail.

To him, these jets were nothing but harmless mechanical birds flying in the sky but to Clara...

"Are they trying to establish dominance?" She spoke as a cold light flashed past her eyes.

"Eh?" Davis turned speechless.

A gaseous wave of white vapor spread through Clara's legs to her the skies behind her.

The sixth-generation fighter jets that were following behind him them suddenly started to turn into ice from the solid exterior.

He could see the pilots panicking and trying to press the switches but every action they did failed which ended up in them panicking even more.

The engines froze and shut down as the fighter jets plummeted downwards. The engines were no longer working as every part of the jet was encased in ice except the cockpit.

Davis still turned to look at Clara speechlessly.

She had destroyed them even before they could establish contact through some means.

He couldn't help but inwardly laugh at their poor fate.

"Brother had already warned them but they still dare to strut off their measly strength around us!" Clara shook her head....

'These fighter jets belonged to India, not China!' Davis inwardly spoke but didn't explain.

He had only warned China and never made contact with another country's troops, but Clara wasn't in the know so it couldn't be helped.

Davis extended his Soul Sense and saw two of the soldiers panicking while the remaining two looked as if they were prepared to die.

Just when the fighter jets were about to make contact with the ground and burst into flames with a loud bang, the incoming explosion didn't happen.

Instead, the fighter jets stopped midair, just a few meters above the ground. Those jets slowly dropped down and landed on the ground without incurring any damage.

Davis laughed at their stunned reactions and melted some of the ice above the cockpit with his soul force. If he had left just like that with Clara, then saving those four pilots would have been meaningless as they would've died of starvation or lack of oxygen.

He didn't doubt one bit that they would be able to melt the Ice that Clara cast over them. It would probably take them months and before that, the pilots would be even dead from the coldness of the Ice.

"Brother, why are you saving them? They deserved to die for being this impetuous in front of us..." Clara spoke as she shot a look at Davis.

"Give them some slack... They meant no harm and probably just wanted to confirm our threat level to ensure the safety of their people..." Davis replied as he shook his head. He wasn't disappointed but understood.

Both parties, his little sister and India, were ignorant about the situation of each other, so it couldn't be helped if they even offended each other.

Since he was present here, he wouldn't let such meaningless conflict happen for no reason.

Clara paused for a moment but then nodded her head, "If they come again, then I'll show no mercy..."

"Suit yourself..." Davis replied as she shrugged.

Clara really did show mercy as she didn't straight away freeze them to death on their fighter jets.

If India was intent on courting death, he wasn't going to stop them either.

Soon, they reached their destination.

In the airspace above Mohenjadaro, in the place where the ancient civilization known to mankind once existed, the Indus Valley Civilization.

Davis looked at the ruins that existed throughout the centuries.

He took a step forward and when he tried to enter the space where his Soul Sense could not enter, he was pushed back again.

"This place is also the same..." Davis narrowed his eyes as he saw Clara try and as expected, the result was the same. She was pushed back as well.

She pointed towards the ruins and spoke, "Brother, look! There are some mortals inside..."

Davis nodded his head in agreement, "It can only mean that our conjecture is somewhat true..."

"Then I wonder what Cultivation Base do we need to be in to enter exactly?" Clara voiced out her thoughts as she pondered.

Davis was currently at the Fourth Stage, Fifth Stage and Sixth Stage in Essence Gathering Cultivation, Body Tempering Cultivation and Soul Forging Cultivation respectively.

That left out the First Stage, Second Stage, Third Stage and the stages above the Sixth Stage to be explored.

However, Clara was at the Second Stage and Third Stage in Body Tempering Cultivation and Soul Forging Cultivation respectively which excluded the Second Stage and the Third Stage from the list to be explored.

This made Davis be suspicious of the First Stage and the stages above Sixth Stage.

If his current way of thinking was wrong then he must need a formation key of some shape to enter this space.

A few moments passed in silence but both of them failed to arrive at an answer.

"There's no use in thinking if we can't arrive at a conclusion. Just in case, let's check a few other locations as well." Davis spoke as he backed off from the invisible border that kept them from entering.

Clara simply nodded her head in agreement and followed suit.