Chen Tang and the others came to the bank of the clear stream, looking at the meandering and crystal clear stream, a few small fish under the water walking through the rocks, and a sika deer drinking not far away.

Chen Tang raised his eyebrows lightly, and said in his heart: "With such a clear water, there are fish parades, isn't it a problem with the water source?"

Dongfang Yu took out a porcelain bottle from his arms and spilled the medicinal powder inside.

There were no waves on the water, and the powder was blown by the wind over the stream, over the water, and nothing happened.

The sika deer on the other side of the stream drank the water and lay down in the shade of the tree, chewing the grass nearby from time to time, moving slowly, not at all like an adult majestic male deer, half-squinting eyes, looking extremely comfortable, looking curiously looking at this side.

Chen Tang looked at the sika deer, his heart gradually sank, and he said secretly: "Sure enough, there is a problem with the water." ”

Dongfang Yu sighed and said, "Master, the poison test powder has not found any signs of poison. ”

Chen Tang nodded, took out two withered chrysanthemums from the cloth bag he was carrying behind him, held them in his hands, and was silent.

Dongfang Yu knew that the master was thinking, so he didn't bother, but enjoyed the beautiful scenery nearby.

The breeze blew by the stream, and in an instant, the grass could not raise its head.

Chen Tang sighed and asked, "Apprentice, what do you think is the difference between these two chrysanthemums?"

Dongfang Yu looked at his left hand and said: "This chrysanthemum is a wild chrysanthemum, the roots are charred and black, and the smell of almonds is a sign of poisoning, and a slight toxin has also been found in the soil in the wild, although it is not enough to kill the animal, but it is enough to make the grass and wild chrysanthemum die." ”

He looked at Chen Tang's right hand and said, "This chrysanthemum, the petals are withered and yellow, and the rhizome is wrinkled, except that there is no sign of toxin, there is nothing new compared to the situation of wild chrysanthemum. Just ......"

Dongfang Yu smiled and said uncertainly: "I feel a little different." ”

Chen Tang looked at the beloved disciple who was deep in thought, smiled and nodded, and then said seriously: "This flower on my right hand is old and dead. ”

"Dead old!How can that be?"

Dongfang Yu was taken aback and asked, "What happened to make all the wildflowers in the town suddenly die of old age?"

Chen Tang didn't rush to answer the questions behind, but pointed to the grass by the stream and said, "What do you think is wrong with them?"

Dongfang Yu knew that this was the master who was teaching himself, and it was also part of the teaching, so he stretched out his two fingers to pick up a piece of grass and observed it carefully.

I saw that the grass roots were wilted, and the tips of the grass that should have been brittle and tender could faintly show signs of yellowing, but it was not obvious.

Dongfang Yu said this, Chen Tang nodded slightly, and said: "It is noon at this time, and everything should be full of vitality, rushing on the grassland, but the deer over there drank the stream water, but after eating the grass by the stream, they lost their vitality, and actually enjoyed the breeze by the stream like an old deer, which is very unusual." ”

Dongfang Yu was silent for a long time, and suddenly remembered the allusion he had seen in an ancient book, and said in surprise: "Urging Ling San?"

"Age-inducing scattering was also a legendary medicine thousands of years ago, and now it has long been lost, this should be the Casting Pill of the Xuan Demon Palace. ”

Chen Tang denied his speculation, looked at him and said: "Like the toxins in the wild land, they are very diluted, so it takes so long to exert their effectiveness, because the medicinal effect is weak, so the animals will only feel tired and a little old after drinking, and it will not take long to recover." ”

"Since it's a matter of water, even the chrysanthemums in the gardeners' homes have withered, so how can the grass growing directly by the stream just wilt?"

Dongfang Yu raised his own question, the plants and trees in this area all grow by the moist breath of the stream, so they are more lush than the plants and trees in other places, and their growth is more vigorous and upright.

Now that there is a Lingling Pill in the water, shouldn't these plants and trees wither before the chrysanthemums?

Chen Tang said: "The effect of the Casting Ling Dan is diluted by the stream, through the sand and gravel into the soil, and absorbed by the roots of the grass and trees, the medicinal power has been extremely weak, and naturally it will not become a big damage, while the gardener is directly watered with stream water, and the medicinal power exists in the flowers and soil, and when it accumulates to a certain point, it will directly make the chrysanthemum grow extremely fast and die of old age overnight." ”

Dongfang Yu thought for a while, suddenly grasped the point, and asked in astonishment: "The Xuan Demon Hall has been destroyed fifty years ago, so where did the Casting Ling Pill come from? Even if there are remnants of the Demon Dao, why do you come to the town to destroy it?"

Chen Tang's eyes flashed, and he said in a deep voice: "The destruction of the Xuan Demon Hall was precisely caused by my Changming Sect. ”

Dongfang Yu was shocked.

......

......

Then, the two returned to Changmingzong and came to Langya Peak, and after bowing respectfully in front of Guo Mingzhe's residence, they came to the source of the clear stream.

Langya Peak is steep, surrounded by cliffs on all sides, it is extremely difficult for cultivators below the spirit to climb the rock, there is a valley in the deepest part of the peak, as if it has been pulled by the heavenly machine in the underworld, the clouds flowing through the twelve peaks will gather here, condense into water, pour down, toss and turn between the peaks to flow to the town, until the distance, forming a clear stream.

It is said that the originator of Changming Sect used great magical powers to involve the heavens, alarmed the heavens, thunder and earth, and gathered the spirits here with the power of heaven and earth.

So far, no one knows why he built the wonders of Langya Peak at such a big price.

Dongfang Yu saw that the water mist in the valley was thick, the sound of flowing water in his ears was constant, and the clouds and mist gathered from the peaks were so thick that they even covered the sun, and he couldn't see his five fingers, only a white expanse, and his heart was greatly shocked.

The originator of Changming is worthy of being a powerhouse in the holy domain who has participated in the battle of gods and demons.

Chen Tang grabbed the apprentice who was about to bend down to inspect the water capital, and asked him to kneel down and kowtow to the deepest part of the mist.

Dongfang Yu suddenly let himself make a big gift for some reason, but when he saw that the master couldn't afford it for a long time, he didn't dare to ask more, so he could only kneel on the ground to accompany him.

After a long time, Chen Tang got up and said, "It's okay." ”

Dongfang Yu took out a small copper ball, put it into the water, and asked, "Master, ...... just now?"

Chen Tang grimaced and said solemnly: "You just have to test the water, don't ask more, what you should know will always teach you to know." ”

Who in the Changming Sect doesn't know that the four elders have a good temper? Usually he rarely reprimands his disciples, when has he ever had such an expression? The frightened Dongfang Yu shrank his neck and lowered his head.

After a while, Dongfang Yu pulled the gold thread wrapped around his fingertips and pulled the copper ball out of the water, only to see that the copper ball was full of luster and no abnormality, so he said: "Master, there is no problem with the water here." ”

Chen Tang nodded and said, "After the Qingxi flows out of Langya Peak, it flows to Ziyun Peak, let's go and visit your Uncle Yuhong." ”

After the two of them descended the mountain, a wisp of divine thought was also withdrawn into the clouds.

Chen Tang sensed the disappearance of that wisp of divine thought, and let out a sigh, only then did he realize that it was cold behind him, and it turned out that the cold sweat had soaked through his clothes.