He only needs to spend 100 knowledge points to open any of the doors and complete the tasks inside.

However, there's a cooldown period between doors, they can't be opened consecutively without a gap.

As for the later part of the story, everyone knows it.

The first door leads to the 1665 dungeon.

The activation points for this dungeon were gifted by Halo, where Xu Yun met Little Niu and completed the novice task.

The second door is the 1100 dungeon.

Time of the Northern Song, Xu Yun caused a major event.

The third door is unknown and not yet ready to be opened.

Another thing worth mentioning.

Before opening the second door, Xu Yun gained 107 knowledge points through cockroach extermination live streaming.

At the time, the allocation of 107 knowledge points was: the 1665 dungeon received seven points, making it '10/100.'

The 1100 dungeon received 100 points, thereby unlocking that tale of the Northern Song.

Later, the Northern Song dungeon ended.

The second door turned into a Space-Time Album reward during clearing, floating above the Halo.

In other words.

When Xu Yun last returned to reality, the state in space was like this:

1665 dungeon knowledge points 7.

Position of the second door empty.

Third door pending opening, knowledge points '0/100.'

However, at this moment.

The position of the second door still remains empty, but the other two doors have undergone special changes.

Firstly, the third door.

The knowledge points on the door are no longer 0, but...

73.

"73, huh..."

Staring at the number on the third door, Xu Yun looked pensive:

"According to the initial judgment, knowledge points are related not only to my personal ability but also to the impact of events in the real world."

"Recently, my abilities have improved significantly, and 'one roach wiped out' caused major reactions in reality, so obtaining 73 knowledge points is reasonable..."

After the cockroach extermination live stream.

Xu Yun carefully researched the characteristics of knowledge points and confirmed one thing:

The acquisition of knowledge points, besides basic knowledge learning, is also related to the social influence of events.

The more people affected by an event, the more knowledge points are gained.

In the past days.

Xu Yun deduced the movement trajectory of a new type of Λ subatomic particle and gained some insights from Old Su's knowledge teaching, progressing in ability.

Plus, a Huadun Biotech had just been established, and during the sales process of 'one roach wiped out,' a defensive and offensive battle with external network hackers took place and trended on hot search, apparently meeting social event criteria.

Therefore, combining both.

73 knowledge points appearing is reasonable.

And this number indicates another scenario...

The next dungeon's opening won't be too long.

First dungeon met Little Niu, second dungeon met Old Su, who will emerge at the third door? 𝐟𝕣𝗲𝕖𝕨𝗲𝐛𝗻𝗼𝐯𝗲𝚕.𝗰𝚘𝐦

Einstein?

Dirac?

Or Zu Chongzhi?

Subsequently, Xu Yun temporarily set aside this idea and approached the first door to observe its changes.

The first door leads directly to Little Niu's 1665 dungeon, currently showing the knowledge points as '10/100.'

Back then, having only obtained 7 knowledge points for this door, Xu Yun made two guesses:

Namely attribute and overflow.

The former means the attribute of knowledge points for the two doors is different, not comparable in identical nature.

Just like currency denominations.

The knowledge points for the second opening of the 1665 dungeon belong to 'ten dollars,' whereas the second door is 'one dollar.'

Due to differing conversion bases, the discrepancies are thus absurdly large.

Regarding overflow conjecture, it indicates priority issues with no attribute relation.

That is, the extermination live stream provided a total of 107 points, first filling the yet unopened second door, with excess seven points overflowing back to the first door.

At this moment.

Knowledge points for the first door still haven't changed, but in its center, appears...

A letter.

Unlike knowledge points, Xu Yun judged with naked eyes, this letter seems removable?

Thinking of this.

He couldn't help but reach out, testing his reach towards the letter.

A moment later.

A sensation of kraft paper reached his hand.

Indeed.

This is a physical object.

Then Xu Yun used gentle force and picked the letter into his hand.

Looking at the letter before him, Xu Yun hesitated for a moment and decided to tear it open.

Inside the envelope was just a piece of letter paper, folded twice.

It appeared ordinary.

Subsequently, Xu Yun extracted the letter paper and unfolded it.

Soon.

A line of text appeared before him:

"Mr. Feiyu, personally opened..."

......

In the past days.

Xu Yun deduced the movement trajectory of a new type of Λ subatomic particle and gained some insights from Old Su's knowledge teaching, progressing in ability.

Plus, a Huadun Biotech had just been established, and during the sales process of 'one roach wiped out,' a defensive and offensive battle with external network hackers took place and trended on hot search, apparently meeting social event criteria.

Therefore, combining both.

73 knowledge points appearing is reasonable.

And this number indicates another scenario...

The next dungeon's opening won't be too long.

First dungeon met Little Niu, second dungeon met Old Su, who will emerge at the third door?

Einstein?

Dirac?

Or Zu Chongzhi?

Subsequently, Xu Yun temporarily set aside this idea and approached the first door to observe its changes.

The first door leads directly to Little Niu's 1665 dungeon, currently showing the knowledge points as '10/100.'

Back then, having only obtained 7 knowledge points for this door, Xu Yun made two guesses:

Namely attribute and overflow.

The former means the attribute of knowledge points for the two doors is different, not comparable in identical nature.

Just like currency denominations.

The knowledge points for the second opening of the 1665 dungeon belong to 'ten dollars,' whereas the second door is 'one dollar.'

Due to differing conversion bases, the discrepancies are thus absurdly large.

Regarding overflow conjecture, it indicates priority issues with no attribute relation.

That is, the extermination live stream provided a total of 107 points, first filling the yet unopened second door, with excess seven points overflowing back to the first door.

At this moment. In the past days.

Xu Yun deduced the movement trajectory of a new type of Λ subatomic particle and gained some insights from Old Su's knowledge teaching, progressing in ability.

Plus, a Huadun Biotech had just been established, and during the sales process of 'one roach wiped out,' a defensive and offensive battle with external network hackers took place and trended on hot search, apparently meeting social event criteria.

Therefore, combining both.

73 knowledge points appearing is reasonable.

And this number indicates another scenario...

The next dungeon's opening won't be too long.

First dungeon met Little Niu, second dungeon met Old Su, who will emerge at the third door?

Einstein?

Dirac?

Or Zu Chongzhi?

Subsequently, Xu Yun temporarily set aside this idea and approached the first door to observe its changes.

The first door leads directly to Little Niu's 1665 dungeon, currently showing the knowledge points as '10/100.'

Back then, having only obtained 7 knowledge points for this door, Xu Yun made two guesses:

Namely attribute and overflow.

The former means the attribute of knowledge points for the two doors is different, not comparable in identical nature.

Just like currency denominations.

The knowledge points for the second opening of the 1665 dungeon belong to 'ten dollars,' whereas the second door is 'one dollar.'

Due to differing conversion bases, the discrepancies are thus absurdly large.

Regarding overflow conjecture, it indicates priority issues with no attribute relation.

That is, the extermination live stream provided a total of 107 points, first filling the yet unopened second door, with excess seven points overflowing back to the first door.

At this moment. Regarding overflow conjecture, it indicates priority issues with no attribute relation.

That is, the extermination live stream provided a total of 107 points, first filling the yet unopened second door, with excess seven points overflowing back to the first door.

At this moment. Regarding overflow conjecture, it indicates priority issues with no attribute relation.

That is, the extermination live stream provided a total of 107 points, first filling the yet unopened second door, with excess seven points overflowing back to the first door.

At this moment. Regarding overflow conjecture, it indicates priority issues with no attribute relation.

That is, the extermination live stream provided a total of 107 points, first filling the yet unopened second door, with excess seven points overflowing back to the first door.

At this moment.