Transmigrated into a Grandpa, Embracing the Laid-Back Life-Chapter 151: We need to install a doorbell.

Su Ming almost instinctively mobilized all the spiritual energy within his body and slammed it hard toward the formation core on the ground!

"Smack!"

A crisp sound rang out, and the just-formed formation instantly collapsed and dissipated.

That intangible barrier that isolated everything vanished in an instant.

The noisy sounds from outside rushed back into his ears like a tidal wave.

Su Ming staggered, nearly falling to the ground.

He forced himself to steady his footing, took a deep breath, quickly walked to the door, and pulled it open.

Outside, Qingfeng was holding up his small fist, ready to knock for the fourth time.

Mingyue stood behind him, holding a package of pastries wrapped in oil paper.

"What took you so long?" Qingfeng grumbled discontentedly.

He stepped inside the door, looking around suspiciously.

He didn't even glance at Su Ming. His small nose sniffed hard, and his clear eyes instantly turned sharp. It was no longer a child's curiosity but carried the scrutiny of a cultivator as they swept toward the two not-yet-collected, low-grade spirit stones in the center of the room, their spiritual energy already dim.

"Were you just using a formation?" Qingfeng's voice held certainty as he pointed at the two spirit stones. "No! This formation feels very strange... it's not an ordinary dust-repelling formation or soundproofing array! The spiritual energy fluctuations are so subtle they're almost non-existent, yet it's... self-contained. Where did you learn this?"

Su Ming's heart felt as if gripped by an invisible hand, cold sweat on his back nearly soaking through his clothes.

He hadn't expected Qingfeng's spiritual perception to be so sharp, not only detecting the formation but even sensing its peculiarity!

I'm done!

As this thought just arose, Lin Yu's voice sounded: "Calm down! Don't panic! He's just probing, he's not sure what it is exactly! Quick, give him a 'reasonable' explanation, half-truth, half-lie!"

In that split second, the color drained from Su Ming's face. The pallor caused by the backlash now served as perfect cover.

His eyes appropriately revealed a trace of panic at having his secret discovered, along with a struggle to maintain composure. His lips trembled slightly as if it was difficult to speak. Finally, as if having made a decision, he took a deep breath and bowed respectfully to Qingfeng.

"Senior Brother Qingfeng sees everything with clarity... This disciple, this disciple dares not hide anything." His voice carried a slight tremor. "This disciple did not intentionally delve into the profound mysteries of formations. It's just... while organizing the ledgers in the Accounting Office, I saw a formation flag. The patterns on it looked somewhat similar to a basic formation rune I'm currently learning. I was just drawing the basic rune and wanted to copy it crudely to see what the difference was between this rune and the patterns on that flag. I carelessly channeled spiritual energy into the spirit stones, never expecting it would actually trigger some slight anomaly, disturbing you, Senior Brother. I beg for your forgiveness!"

His words were seventy percent true, thirty percent false. The true part was that he indeed dealt with ledgers all day. The false part was that he packaged Lin Yu's peerless inheritance as a "self-taught wild method" he "comprehended" from the boring account books. He cleverly transformed an act of "privately studying formations" that might involve sect taboos into an "academic inquiry conducted to do a better job."

Qingfeng was stunned. He had anticipated many possibilities, even suspecting Su Ming might have obtained some secret inheritance, but he never expected such a... reason full of "Accounting Office characteristics."

He looked at the two ordinary low-grade spirit stones on the ground, then at Su Ming's face, pale from "spiritual energy backlash" and "shame," and that explanation that sounded reasonable, even a bit "bookworm-ish." His brows furrowed tightly as if judging the truth of these words.

Beside him, Mingyue blinked her big eyes, looking at Su Ming's "pale and weak" appearance as he struggled to explain. She gently tugged Qingfeng's sleeve. "Senior Brother, Su Ming was only trying to do the tasks assigned by the sect well..."

Pulled by Mingyue, Qingfeng stared at Su Ming for a few more moments, ultimately failing to find anything more suspicious about him.

He pursed his lips, that sharp aura retracting as he reverted to that proud, aloof little shishu. He snorted. "Hmph, you've gone stupid from all that calculating! The Dao of formations is something you can just randomly ponder? Forget it this time. If you mess around like this again, be careful of spiritual energy backlash destroying what's left of your already ruined foundation!"

The crisis was temporarily averted.

The massive boulder in Su Ming's heart slowly lowered. He hurriedly bowed again. "Thank you for your instruction, Senior Brother. This disciple will remember it."

"Thank you for your concern, Senior Sister."

As he spoke, he subtly turned sideways, steering the conversation away.

"Please, both of you, come in. Today, would you like to hear 'Eight Princes Vying for the Throne' or 'The Golden Throne Hall Stained with Blood'?"

This unexpected "inspection" acted like an alarm bell, ringing harshly in the hearts of Su Ming and Lin Yu.

Formations were not omnipotent.

For high-level cultivators with sharp spiritual perception, any trace of abnormal spiritual energy fluctuation could expose them.

...

After seeing Qingfeng and Mingyue off, Su Ming immediately closed the door.

"Master, this..."

"Our 'Way of Survival' still has gaps." Lin Yu's voice was unprecedentedly grave.

"I forgot. That kid's master has an extremely high seniority. He must have protective treasures on him, and his spiritual perception far exceeds others of his level. If you hadn't withdrawn quickly just now, he might have already seen through it."

Lin Yu's soul thought carried a trace of lingering fear.

"It seems having a 'safe room' isn't enough. We still need a 'doorbell.'"

"Doorbell?"

"An early warning network." Lin Yu explained. "We must know in advance, before anyone gets close."

Su Ming immediately understood Lin Yu's meaning.

For the next two days, he did not attempt to overlay formations again.

Instead, he devoted all his energy to constructing the early warning network.

He took the three runes "Resonate," "Repel," and "Flow" as the core.

He disassembled and simplified them, carving them into miniature runes only the size of rice grains.

Then, with extreme care, he placed these nearly imperceptible warning nodes under the outer windowsills of the eastern side room, in the door cracks, and at the roots of the walls.

Each node was like an invisible eye.

They silently brought the entire eastern side room into the surveillance range.

When the last warning node was silently activated by Su Ming,

the entire eastern side room instantly felt different in his perception.

His divine sense seemed to connect with those tiny rune nodes.

Ten zhang outside the door, an ant crawled by.

Five zhang outside the window, a leaf fell.

On the roof, a sparrow preened its feathers.

Everything was clearly presented in his mind.

The entire eastern side room seemed to transform into an independent space with its own "domain."

He was the master of this domain.

Success!

"Master!"

Su Ming called out excitedly in his heart.

"Mmm." Lin Yu's voice also carried a trace of satisfaction. "From today onward, the spiritual thought communication between us, master and disciple, will have no more reservations."

Su Ming finally possessed an absolutely private cultivation environment.