Seeing this fragment, Zong Shen immediately felt invigorated—no more back pain or sore legs, and his arms were full of strength.

Just looking at this fragment, one can tell its value far exceeds that of a points exchange.

The points exchange is considered mundane because the quantity of Burrow Monsters is enormous, almost to the point of being overwhelming.

But this Challenge Fragment is different; only a Burrow Hero can drop it, and only one Burrow Hero will refresh in a burrow, so their values cannot be compared.

Then Zong Shen opened the points, raised an eyebrow, and a trace of delight appeared on his face.

One Burrow Hero directly increased 1000 points!

An Excellent Level Gargoyle only gets 25 points, a Rare Level Ghostly Demoness only gets 125 points, according to this logic, if an Orange Dominator Level Burrow Monster appears, then its points would be 625, though it seems there won't be any refresh of Overlord Level Burrow Monsters for now.

And one Burrow Hero directly provided 1000 points reward, which is the current ceiling level of points rewards.

Zong Shen also opened the Strength Extraction, which directly gave 1000 points of Extraction Value.

Adding the 625 Extraction Value obtained after killing the Evil God's Forgotten, plus some Extraction Value contributed by the small fry Sewn Monsters, and the 1000 points of Extraction Value contributed by this Burrow Lord, he once again accumulated 1500 points, increasing his Strength Attribute by 1 point, with a slight overflow of one or two hundred points of Extraction Value moving to the next level.

His Strength Value reached 73 points, and his Life Value became 1188 points.

This is the third point of Strength Gain Zong Shen has obtained so far.

This Strength Extraction power seems astonishing, but it's not easy to accumulate once, considering Whiteboard Level Monsters make up the majority, and a single Whiteboard Monster only contributes 1 point of Extraction Value, and most importantly, only monsters Zong Shen finishes off can have their strength extracted.

Even if he kills Elite and Excellent Level monsters, he can only extract 5 and 25 points of Extraction Value respectively, only by killing Rare Level and Overlord Level can he earn substantial points at once, but Rare Level and Overlord Level are not common like cabbage, encountering one in the wild requires a certain amount of luck.

Although the Ghostly Demoness among Burrow Monsters is Rare Level, its refresh rate is similarly dismal; Elite Level monsters refresh at 20% of Whiteboard Level, and Excellent Level at 20% of Elite Level, and by the time it's Rare Level, they only account for 0.8% of the total refreshed Burrow Monsters per day.

With 3 minutes per batch, 5 Burrow Monsters per batch, each burrow can't refresh more than 20 Ghostly Demoness per day.

Although Zong Shen now controls one burrow by himself, he can't stay at this burrow 24 hours a day, he has to actively go out to hunt, specifically targeting the Ghostly Demoness, but even so, it's not possible to quickly gain Extraction Value.

On average, Zong Shen needs to hunt for three to four hours to accumulate enough Strength Extraction Value for 1 point of Strength Gain, and this is with the Burrow Challenge, where there is no shortage of monsters to kill.

If the Burrow Challenge ends, Zong Shen would need many days of routine exploration to gain 1 point of Strength Gain.

But something is better than nothing. Anyway, more strength is always a welcome extra, whether it's a lot or a little more.

So this Strength Extraction was clearly organized long ago, and it's not overwhelming at all, the actual difficulty to obtain is rather high. Fortunately, the Strength Demon Ring belongs to the jewelry category and is fine to slowly accumulate over time.

Zong Shen closed all the fancy pages and began to focus on the Burrow Heroes. Each Burrow Hero killed equals a temporarily unknown-valued [Basic Challenge Fragment] plus 1000 Cave Points, plus 1000 Strength Extraction Value, and also some quantity of Experience Value.

Zong Shen contemplated for a moment, there are as many as 1000 Burrow Heroes in the entire area, and if he could take down a hundred or eighty of them, it would really be a huge profit!

A hundred [Basic Challenge Fragments], 100,000 points, 100,000 Extraction Value, and 200,000 to 300,000 Experience Value—just imagining this is already formidable wealth.

100,000 points are enough to exchange for twenty to thirty Tier Four Defense Towers or draw 100 times from the 1000 points draw option.

There's nothing more to say about the 100,000 Extraction Value, enough to increase his Strength Attribute by over sixty points!

Thinking of this, Zong Shen nearly drooled.

"Set a small target first, let's defeat more than 100 Burrow Heroes first!"

This goal sounds simple, but achieving it still has some difficulty. Judging by area density, it's not easy to kill a hundred at all.

But no matter what, Zong Shen had already decided to selectively target and kill Burrow Heroes and high-value single targets like the Ghostly Demoness. As for the final challenge, that can wait—the second wave of points exchange had made Zong Shen even more confident.

His strategy remained as it was from the start, which was to take the initiative.

At this time, the warriors of the Exploration Squad also arrived at the burrow frontline.

"Wenresa, I'll continue to rely on you at the burrow frontline."

"In the next few days, other situations are likely to occur at the burrow frontline."

"I need you to be more vigilant, prevent unexpected events, and ensure the safety of the warriors."

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