After the three of them drank the rice wine, the chief guard settled the bill. After resting, the three of them have decided to go against the current and find the fork of the Li River and the Hyun River. The Hyun River is also the easternmost of the four rivers, and the east of the Hyun River is a gathering place for workers who make Xuanshi tools.

Green Bay lives up to its name, compared to the vicious grassy banks of the Hyun River at the time of departure, the vegetation here also looks delicate and lovely: the purple flowers are the asters, and there are large and large flamboyant cockscombs, as for the green grass that is as high as the cat's tail on the shoulders of people, Ying'er and the chief guard don't recognize it, only Zhen Xun recognizes it, the "cat's tail grass" is Tianmendong, and there are already some impatient "cat tails" that bloom sporadic small white flowers.

"Aster can treat cough, has the effect of moistening the lungs, dissolving phlegm and relieving cough, and the craftsman who smelts bronze will inevitably inhale some smoke and dust, so he will also often use aster to make soup. The cockscomb has the effect of stopping bleeding and astringent, as well as stopping the band and stopping dysentery, and the people of Panlong City think that the cockscomb flower is somewhat similar to the burning flame, so every household in Green Bay likes the cockscomb flower very much. The chief of the guard explained.

"The tuber root of asparagus is a commonly used traditional Chinese medicine, which has the effect of nourishing yin and moisturizing dryness, clearing fire and relieving cough." Zhen Xun added.

But what were these three plants, as if she had seen them on the same page? Zhen Xun thought about it, the three plants are different families and genera, and the cockscomb can be used as flowers, and the asparagus is a little too ...... Uh, is it on the menu? No, wild vegetables cannot be eaten casually, and there may be excessive heavy metals......

That's right! It is a heavy metal pollution poster in the company's exhibition hall!

Asparagus can remove heavy metal particles; Aster, astragalus, tobacco-containing and cockscomb-containing plants can attract large amounts of radioactive elements such as uranium...... Zhen Xun remembered the text on the leaflet.

Don't? A terrible thought came to Zhen Xun's mind, and she grabbed the arm of the chief guard and asked, "The people of Green Bay have the longest life, don't they?" He was also much less sick than the rest of the city. What about the west? What flowers and trees are there? “

Suddenly, the chief guard who was grabbed by Zhen Xun's arm suppressed the knee-jerk action of throwing Zhen Xun out of a backflip, he glanced at Ying'er and said frankly: "Indeed, the people of Green Bay have the longest lifespan, and there is basically no food doctor. As for the west, the potters did not like to plant flowers, which affected them to dig in the mud. ”

After walking for a while, the little-visited riverbank also felt a little more barren grass, in order to ease the atmosphere, Zhen Xun took out the chrysanthemum from the Qiankun bag and let it go.

After the four paws of the black cat-sized chrysanthemum landed, he first stretched his waist with half-squinted eyes, and then gently bit the corner of Zhen Xun's clothes, Zhen Xun folded the tallest Tianmendong, and picked off the leaves at the lower end, and instantly made a pure natural cat teasing stick.

But Ju knows in his heart that he is a leopard! Mythical beast leopard! How can you be dealt with by a small cat teasing stick? It jumped as it followed the trio, reaching out its paws to grab the leaves at the top of the asparagus stick.

"By the way, do you have a river god to worship in Panlong City?" Zhen Xun remembered Kang Hui, if the rivers in Panlong City also had river gods like Kang Hui, he could find them and ask them about the specific situation of the four rivers and the reasons for the differences, even if he couldn't ask these questions, he could also ask them for some suggestions for building water canals.

"River God? Haven't heard of it. The chief guard thought for a moment and replied.

"But I've heard the master say that Panlong City has worshiped the Divine Bird before." Ying'er said that when her master Liang Sheng went to the palace to teach her how to make Xuanshi tools, he also told her some humanistic stories about Panlong City.

"That was a long time ago, I also listened to the old people in Panlong City talk about it, more than 20 years ago, Panlong City originally enshrined a pair of red dragons and phoenixes, the phoenix is above, and the dragon is below. Later, after the statue of the red phoenix was put away, the statue of the god that was only enshrined in Panlong City was replaced by a red dragon carved from ore. This is what the chief of the guard learned from the mouths of several old men of Panlong City, as for the reason for putting away the statue of the red phoenix, although several old men did not say, but the chief of the guard also guessed a few points, originally, the merchant admired birds, and later the merchant played a big war, and the performer also "hated the house and the black", and at that time, Panlong City in order to reflect its neutral position, the red phoenix was hidden.

"Is the decline of Panlong City in recent years because we have neglected the Red Phoenix God?" The head of the guard looked at Zhen Xun, cautiously tentative, he obeyed Lord Liangsheng's instructions to accompany the goddess and Miss Ying'er, since she is a goddess recognized by Lord Liangsheng, she also has some friendship with other immortals, I don't know what kind of attitude other immortals have towards Panlong City.

"No, no, small belly chicken intestines can't be made into immortals." Zhen Xun shook his head and responded, but after thinking about it, the "small belly chicken intestines" he just said may be suspected of connotating Chifeng, and listening to the description of the chief of the guard, the status of the Chifeng God is still relatively high, so he added, "I mean, this pattern needs to be opened, since the Chifeng God is a god, he should understand the difficulties of mortals, right?" ”

A huge toad suddenly popped out and startled the three of them with a pair of big eyes.

Zhen Xun deliberately glanced at the toad, and was shocked by its size, it was the size of a basketball, of course it didn't drag half a melon behind it, it was just an ordinary giant toad.

Cangxi River, Longma Water Boat, the toad Jing Gouneng who asks for a tip, the girl Ayin who told herself that she wants to leave the Yue Kingdom to deal with the robbery of relatives, and Kang Hui and Ba Fei who treat themselves like brothers and sisters...... Zhen Xun didn't dare to let himself continue to think about it, but his thoughts were like a tide, and they became more and more turbulent.

I don't know, how is Mingyun's leg?

I don't know, how has the "Agent Orange" crisis been resolved?

I don't know, did the mastermind behind the scenes get the punishment they deserve?

TNND, the old lady is so wronged! Zhen Xun looked up at the sky, why should I pay the price! Why did you throw me away in an era that was 3,000 years ago! Have I done anything wrong, and why should I be punished! Open your eyes, O God! Don't wait for anything to stun, take me back directly, my mother doesn't believe it, good is rewarded, evil is rewarded, is it so difficult?

Zhen Xun, who was arrogant and indifferent on the surface, and roared wildly in his heart, felt Ying'er pull off his sleeve and motioned to look down: Ju Yuan held the fat toad at his feet, and then pressed the toad that wanted to escape with his claws, and looked at Zhen Xun with a proud little face, the expression was clearly saying, Oh, take it to play, don't cry with a sad face.

There is a way, the poor play with cars, the rich play with watches, and fairies play with leprosy treasures, right? Zhen Xun couldn't laugh or cry.

Zhen Xun rescued the toad who went out without looking at the yellow calendar from the clutches of Ju Xu, and threw the toad away with his hind legs and released it.

"The toads in Panlong City, are they all so big?" Zhen Xun asked suspiciously, he is going to become a sperm, and he doesn't seem to have seen it in the suburbs near the palace before, but it was early spring, and it was normal not to see toads, but ...... Before, she faintly felt that something was wrong with Panlong City, but now it is April, and the wild area of Panlong City is surprisingly quiet, except for some lush flowers and trees in Green Bay, from the palace on the east side to Green Bay, all the way, not only can you not hear the birds, but even the butterflies and bees have not been seen......

"In the past twenty years, the number of animals in Panlong City has decreased a lot, in addition to toads of this size, we often see three-legged toads, white-haired and red-eyed mice, etc., but we usually don't dare to provoke those animals." The chief of the guard said.

"So when did this begin? Is it after the red dragon statue was replaced? Zhen Xun's question was answered in the affirmative by the chief of the guard.

In the description of the chief of the guard, the ore for carving the statue is a new mine mined in Panlong City more than 20 years ago, and the craftsmen carved a pair of coiling dragons with the mined ore, which are located in the west and east of the city.

If the truth was as she suspected, that the problem in Panlong City was due to heavy metal contamination or radioactive materials, and that it was likely to be the ore that had been mined to carve the idols, then how could she be sure about it? Although she described according to the chief of the guard, some residents would have some discomfort in their eyes after worshipping in the temple, and it was speculated that it was more likely to be radioactive material.

It's easy to use spells to make the city's inhabitants drop the idols, and it's not difficult to block the stone mines, but how can she make sure that all the problems are caused by these ores? How can she be sure that there is no other "fish that have slipped through the net" except for the mine that has been mined? If you can't solve the problem at the root, building a canal will not be very useful, and it is likely to be a waste of hard work.

In modern times, this situation can also be detected with the help of instruments, but what should be done in the Song Dynasty 3,000 years ago? Besides, when I came to Panlong City this time, I thought that I hadn't downloaded the information on water conservancy projects before, so Zhen Xun didn't even bring a tablet, and he didn't even have the opportunity to ask for help from lotus root flour balls.

The scalp is itchy, damn it, is it going to grow a brain? Kang Hui said that we must not mess up, we must first distinguish the priorities, first determine the source of the problem, what are the simple methods for detecting radioactive materials? Dead knowledge of physics and chemistry began to attack her: film sensitivity; interference of ionizing radiation on cameras; Wilson Cloud Room ......

Wait, Wilson Cloud Room!