Compared with the countries in the south, the country of frost is still a bit too cold, and the winter is extraordinarily long.

The further north you go, the thicker the snow is, the snow in the south is melting, and the white snow scene in the north shows no sign of changing.

In an area with a dense water network, it is not easy to find that trace of the source, especially under the cover of ice and snow, it is even more difficult to find the clues that Shuimu wants.

Sometimes Shuimu even had to go deep into the underground river to get some water samples and test which tributaries he was looking for.

"It can't go on like this. 』

If the methods don't improve, the search will only be halfway through.

As a last resort, Yusuke had to go back to move rescue soldiers.

After half a day, Xinzhen and Yongsuke came to the Land of Frost again. This time, with the help of Baiyan, the speed was finally a lot faster.

"Looking like this, does it work?"

Xinzhen was a little puzzled. It wasn't a big deal. It felt like a waste of time to come here with such a big fanfare.

Yusuke nodded solemnly.

"The pond water that can kill aquatic creatures discovered in the land of Taki, and the same thing was found in the land of frost thousands of miles away. Although it is still impossible to analyze what dangerous substances are in the water, it is very likely that there will be some terrible substances in the water. Great discovery."

There are not so many coincidences in the world. There must be a connection between the two, but it has not been found yet.

The poisonous water of the Kingdom of Frost flows downstream, causing a long winding river to be lifeless, indirectly affecting the Kingdom of Taki, which is thousands of miles away.

This is no small matter. You know, no matter how violent the poison is, after such a long-distance dilution and degradation, the effects have long been eliminated.

"This is no ordinary poisonous water. No vitality emerges even after pouring it into the almighty potion, which means that even the tiniest microorganisms don't exist in it. It is genuine "dead water". We are by no means wasting time for nothing."

It is not obvious in the land of Taki, even the water samples found in the land of frost are a little puzzled. Even the water samples found in the land of frost are a little puzzled. There are actually bacteria that cannot survive in the ninja world. Water, if it wasn't for a very purposeful and targeted search, who would have noticed such a big difference in water that didn't look any different at first glance.

"The biological toxin can't travel such a long distance, but there is no sign of man-made. I guess it is a special substance that dissolves in water and is similar to energy."

"Okay, hopefully I can find out a bit."

The main task is to observe Xinzhen. The current focus should be on the village, especially Haruno Sakura, not only to monitor the changes of Sakura after she practiced controlling the tailed beast Chakra, but also to ensure her safety.

In addition, it is also necessary to pay attention to Danzo and his subordinates.

It's really not a comfortable thing to give up important things and come to such a cold ghost place.

After half a day, the busy Yongsuke finished testing the last water sample in his hand, and said with some satisfaction:

"It's not far, what we're looking for is right in front of us."

"You have said this for the third time."

Yusuke pointed to a hilly area ahead.

"Look there with your eyes open!"

"understood!"

Xinzhen made a seal on her hands, opened her eyes again, and glanced at the direction Xinzhen pointed.

"There's nothing, just an underground river and a huge cave. There's a small hill where the ground is basically empty, but there's nothing in it... Hey, that's not right!"

Xinzhen suddenly stopped talking casually, and an incredible look suddenly appeared on her face,

"There are things under the water, so densely packed that I can't count them."

Involuntarily, Xinzhen quickened the pace of her feet and moved quickly to the place where she found the abnormality.

"Be careful, beware of danger!"

"Don't worry, there is still a long way to go!"

Ninjutsu, which has a larger scope of detection than Bai Yan's, is not something that can be encountered casually, and the safety of the two should be guaranteed.

After a while, the shocked expression on Xinzhen's face, hiding in a snow-covered evergreen bush, could no longer be hidden.

"What did you find?"

Yusuke asked curiously.

"Bai Jue, there are so many Bai Jue clones!"

"Bai Jue clone? You mean..."

Hearing the unexpected answer, Yusuke was suddenly horrified.

"Here, is the underground base of Uchiha Obito and Bai Jue, the arsenal that cultivates the 100,000 Bai Jue Legion?"

It's really an amazing discovery. After a whim of investigation, I didn't expect to find the enemy's lifeline.

"This is a hornet's nest, are you going to poke it?"

Xinzhen shook her head,

"Look at it first."

Such a powerful force, even the strongest Fire Nation can't resist alone. Before the five shinobi villages fully started the war machine, 100,000 Baijue was currently invincible. Such a large number is enough to destroy half of the shinobi. bounded.

"It should have been thought long ago that the main battlefield of the Fourth Ninja World War is in the Land of Frost, and the base of the White Jue Legion will not be far away."

According to Mizuki's memory, when Uchiha Obito launched the Fourth Ninja War, most of the battle formations were deployed in the southeast of the Land of Frost, and a small number in the Land of Fields and the Land of Iron.

Nearly 200,000 people fighting in this small area will be a big scene that may never happen again in the ninja world in the future.

To the southwest of the Country of Frost is the Country of Taki, followed by the Country of Grass and the Country of Rain. The country of rain is the country of stone to the west, the country of wind to the south, and the country of earth to the north.

Nagato and Uchiha Obito do not trust each other, and their strongholds are separated by two countries and thousands of miles away.

"It's really spectacular, 100,000 Bai Jue, if there is a guy with intensive phobia, he may faint."

Under the observation of white eyes, the situation in the underground cave can be seen at a glance. Rows of Bai Jue stood at the bottom of the underground river and waited quietly.

"So, the source of these strange poisonous water should come from here? No wonder it is so magical. With our knowledge, we can't find any clues. It is not surprising that it has something to do with this kind of thing."

After carefully observing for a while, Xinzhen continued,

"Jue and Obito are not here, but there are enchantments around them, so it's a bit difficult to sneak in without knowing it, and those Bai Jue clones under the water are also awake, so they can't avoid their perception. Let’s go back next time, discuss it in the long run, and then decide what to do.”

After recording the situation inside, and after Chakra reflected the situation, the two quickly left the place.

As night fell, a snowstorm came unexpectedly, and flakes of snow fell, covering all traces. The spring of the Land of Frost has not yet come...