Although the information found online suggested that all postal mailboxes have staff who collect mail regularly, He Kao wasn't entirely convinced, so he felt more at ease going to the Qi Yuan City General Post Office. The mailboxes there should be reliable.

He was still driving the car borrowed from Xiaopang's house, and along the way, he fulfilled Gao Xue'e's wish to visit a local farmers' market.

They spent forty yuan to buy two pairs of flat shoes, one pair for each of them, and an additional thirty yuan on a jacket for himself, plus fifteen yuan on a hat.

Nowadays, there is surveillance everywhere, so a bit of disguise is necessary. He didn't worry about the quality, as long as it was cheap. Moreover, He Kao suspected that he overpaid because he didn't have much time to negotiate with the vendor.

Elsewhere, he purchased envelopes and stamps, packed the materials separately, attached stamps and printed addresses, and it was almost four in the afternoon by the time he reached the Qi Yuan City General Post Office.

He Kao parked the car across the street and ensured no one was observing.

The method to confirm this was simple—he just needed to be out of Gao Xue'e's line of sight so he could open the portal. He Kao didn't need to enter the portal, just confirming it could be opened was enough.

Gao Xue'e stayed in the car, and He Kao put on a hat and mask, and changed into his new shoes. There were two hundred materials in total, too many to carry at once, so he took twenty to pave the way, hiding them in his clothes as he walked out of the street, around two corners, and arrived at the General Post Office.

Outside the post office, there was a mailbox, but the slot was too small, and the envelopes with materials were a bit large, so he went into the lobby on the first floor.

They sold stamps, postcards, and various souvenirs here, and also accepted parcels and registered mail. In one corner of the lobby, there was a mailbox with a large slot, big enough for manila envelopes.

Wearing gloves, He Kao took out the materials to mail them, only to find someone was observing him... He had seen this person standing at the entrance while outside the post office.

When he entered the lobby, that person followed him in and pretended to look at the promotional posters, but his attention was fixed on He Kao the whole time.

What was going on? He hadn't even mailed the materials, yet he was already being watched? According to Gao Xue'e, today's postal mailboxes have almost become dedicated drop-off points for anonymous accusations. Could someone be here for prevention?

He was right in guessing! Ever since the news about that storage box came out, Gu Yunteng had dispatched people to watch over a dozen main postal mailboxes in Qi Yuan City, specifically recording who came to drop mail.

Gu Yunteng predicted their actions after discussing with He Kao and Gao Xue'e.

Although it wasn't easy to find people like Old Hong who do dirty work in a rush, Gu Yunteng could send out plenty to do tedious tasks like this. After all, loitering in public places isn't illegal!

Nowadays, very few people mail letters this way, so as soon as Gu Yunteng's subordinates saw someone doing this, they secretly watched, pretending to scroll their phones while capturing the person mailing the letters.

Would this be effective? If someone really wanted to report Gu Yunteng with black materials, they wouldn't necessarily do it at these times or places, right? Gu Yunteng was just testing it out, giving it a shot even if nothing came out of it, since he didn't need to personally watch.

With this discovery, He Kao wanted further confirmation, so he put the materials away without putting them into the mailbox and turned to leave the lobby.

That person furtively followed him out, even filming him with a phone. Unfortunately for him, He Kao never showed his face directly, crossing the intersection and walking into the greenery on the opposite side of the street.

On the other side of the street was a river, with railings built along its banks and a scenic walkway for citizens. Qi Yuan City had a lot of plane trees, most of them quite old and large.

He Kao disappeared behind one such tree, and that person, looking around with his phone, followed over, pretending to be a passerby.

Suddenly losing track of He Kao, the person was confused, walked to the riverside, leaned on the railing, and looked down. At that moment, He Kao suddenly emerged from behind the tree; confirming no one could see him, he kicked the person on the butt.

The person yelped as he fell headfirst into the river, and his phone flew into the water. The riverbank waters were shallow, and the bottom was soft mud and water plants—he wouldn't die from the fall or drowning.

By the time the person, covered in mud, climbed up the railing, He Kao had long disappeared.

He Kao didn't know what the person's background was. If he was only observing at the post office, He Kao had no reason to do anything to him. But since he had already left the post office and the person kept secretly taking photos, following him into the greenery across the street, it was clear he was causing trouble.

So he showed no mercy with that kick, and at the same time realized how useful the Hidden Moth's ability really was—utterly elusive and hard to guard against! After experiencing the series of events over the past two days, He Kao underwent subtle changes, at least becoming more decisive in action.

Once sure no one was still tailing him, He Kao circled back to the car. Gao Xue'e asked, "How did it go? Did you send the materials?"

He Kao: "No."

Gao Xue'e: "Why didn't you send them? What happened this time?"

He Kao: "I thought about it and decided we shouldn't mail the materials in Qi Yuan. Let's go to another province."

Gao Xue'e: "Another province? Where do you plan to go?"

He Kao: "Let's go on a trip tomorrow. It's the last day of the long holiday, and we should go out for a bit. Let's go to Jing Lake."

Although Qi Yuan is the capital of Jianghai Province, it's close to the neighboring province, and driving to Wucheng City takes only two hours, while getting to Jing Lake City takes just a little over an hour. But today is definitely too late for that.

On the way back and forth, He Kao also paid attention to the various surveillance cameras in the streets and alleys. He found that some of the surveillance was "effective," and when exposed in front of the cameras, he could not activate the portal.

But some surveillance seemed "ineffective"; even if he stopped there facing the camera, he could still open the portal.

He Kao speculated that those ineffective cameras were either broken or abandoned, or within the effective storage time, no one would check them.

This is actually a normal situation. With so many cameras, who would be able to watch all the surveillance records for no reason? Moreover, they are installed by different units, and after a long time, perhaps some units would forget about them themselves?

In most cases, the units that installed them are only responsible for installation, not removal, because removing them also costs money, and usually, there's no budget for that.

There's also another situation where many cameras only have real-time monitoring functions, or the storage function isn't activated, which means they do not store information records.

Thus, when someone is watching the surveillance, it's effective, and when no one is watching, it's ineffective.

Today, He Kao had a little more leisure time to go home, so he also bought some groceries on the way, planning to cook dinner himself, with beef stew with radish as the main dish. Gao Xue'e asked in surprise, "Xiao Kao, you can cook too?"

He Kao replied, "If you want to eat, you have to know how to cook, right? Don't you?"

Gao Xue'e said shyly, "I can learn."

He Kao: "Then start learning today."

Anyway, that evening's meal had Gao Xue'e praising it endlessly, claiming she was too full to eat more. He Kao was still sober about it; he knew his cooking was decent, but not as exaggerated as Gao Xue'e's praise.

Gao Xue'e finally went to sleep a bit earlier today and had a cup of Chonghe Drink before bedtime.

After she fell asleep, just past eleven o'clock, He Kao returned to his room. He wanted to attempt something he had thought about last night, which was entering the portal to cultivate the Hidden Moth Temple.

He was used to sitting on his bed for cultivation, so he simply placed the portal on the bed, and upon entering it, he immediately entered the state.

The set of "Observation Secret Manual" that He Kao had summarized, he named himself as "Hidden Moth Temple." Hidden Moth Temple requires a very difficult fixed realm to enter; after entering, it's difficult to maintain, but the state after entering the portal is almost tailor-made for it.

Or, to put it another way, the person who initially created this technique described this state and required the cultivator to achieve this state in the real world's fixed realm.

In this cultivation, He Kao directly entered the deepest fixed realm and suddenly comprehended a set of techniques.

This place of nothingness seemed to have pieces of memory appearing, directly entering his consciousness, and in the portal, he only had pure consciousness...

After exiting the portal, He Kao sat on the bed silently digesting for a long time because he just obtained the technique, which turned out to be the Hidden Moth Sect's secretly transmitted Insect Concealment Skill technique!

However, among the known Seven Great Magic Sects, there is simply no Hidden Moth Sect. Whether it's Wu Yanjun or Qian Guran, or Lin Qingshuang, they only know of the legends of the Hidden Moth but have never mentioned the existence of the Insect Concealment Skill or Hidden Moth Sect.

The legend of the Hidden Moth began more than a thousand years ago; it has always represented a person, a type of identity, and ability. At this moment, He Kao finally understood that behind this identity lay a set of secret technique inheritance.

The so-called Hidden Moth object now seems to him to be just a portal, also appearing as an intangible divine artifact. The intangible divine artifact is attached to a tangible object, becoming the key to opening the portal, such as the Beast Claw Pendant he's wearing at this moment.

His father and Huang Xiaopang's father should not have obtained the true inheritance. As for Huang Xiaopang, He Kao is more certain he has not received the inheritance, because even if he did, he has not cultivated to the entry level.

The prerequisite for obtaining the inheritance is to cultivate Insect Concealment Skill to entry level. But without the inheritance, how can one cultivate Insect Concealment Skill to entry level? This forms a paradox.

Resolving this paradox is simple, by obtaining the technique of Insect Concealment Skill through other means, then cultivating to entry level, and then coincidentally receiving the inheritance of the Hidden Moth object... Hmm, just like He Kao.

The Observation Method he cultivates is the entry level technique of the Insect Concealment Skill. The inheritance he received in the portal, compared to the secret technique he summarized, has some subtle differences but is evidently the same set of techniques.

Secret technique cultivation, a slight difference goes a long way. Without Lin Qingshuang's notes, He Kao would not have been able to cultivate to entry level. Lin Qingshuang has not seen Insect Concealment Skill, but the requirements for secret technique entry level always share commonalities, and her notes focused on these points.

This is only the entry level technique, not the official technique that can be cultivated after entry.

The Observation Secret Manual summarized by He Kao has twelve pages, previously he cultivated only the contents of the first two pages. The content on the third page already involves the technique after entry level, but the differences with the real Insect Concealment Skill become increasingly larger and more ambiguous.

What He Kao managed to grasp in the portal was only the first technique of the Insect Concealment Skill, or rather, he can currently only comprehend the first layer of techniques.

In that case, according to the strange inheritance description, could he already be a Tier One Sorcerer of the Hidden Moth Sect? Ancient title: Stalker!

**

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