Qianqian happily rushed back to her cousin's side and asked, "What dangerous things will we encounter?" Will there still be dangers in disease control work?"

"Dangerous! Disease control work is much more dangerous than you think, we will definitely go to the epidemic area to investigate this time, and at that time, no part of your body can touch the epidemic water, you know?"

"Oh, I know, but what is the plague water?" Qianqian looked confused.

"Infested water is a body of water contaminated with schistosomiasis eggs or cercariae, and nearby lakes, ponds, rivers and even wells can be infested and should not be touched. ”

Qianqian hurriedly put down the teacup in her hand, looking horrified, "Is the tea okay?"

"It's okay if the water boils, don't touch the raw water!"

Qianqian breathed a sigh of relief, although she was told by her cousin that it was dangerous, she felt more exciting in her heart, and hurriedly asked, "When are we leaving?"

Everyone looked at Nan Zhiqiao, who was the backbone and leader of the operation, deciding the time and place of the action.

Nan Zhiqiao: "Let's go now, first go to the canal where Dad Zhang used to fish." ”

——

Zhang Xiaobin led the way, because there were two girls in the team, Zhang Xiaobin chose a road that was easy to walk, although the road was easy to walk, but there were some detours, and it was quite time-consuming.

The so-called easy road is also a country road, and it is also a mountain road.

The mountain road is rugged and only allows one person to pass, and there are low shrubs on both sides, and there are tall trees on both sides of the road, and the cries of knowledge fill the forest.

Zhang Xiaobin walked in the front, holding a set of tools for salvaging snails in his hand, and reminded the people behind from time to time to beware of the thorny thorns in the middle of the path, Nan Zhiqiao walked in the second, carrying a sampling box in his hand, Zhen Zhen followed closely behind, carrying a backpack, and some items for wild exploration in the bag.

After a distance through the woods behind the village, the four of them followed the path and meandered down the woods, and after more than forty minutes, the sound of "la-la-la" water could be heard from the depths of the woods.

The deeper you go into the woods, the louder the sound of the water becomes, and the sound of "boom" becomes "boom".

In the middle of the woods, a waterfall with a drop of more than ten meters falls vertically from the cliff halfway up the mountainside, and there is a large pool at the bottom of the cliff, and the waterfall water hits the waterhole, making a deafening roar.

Under the waterfall is a circular pool with a diameter of more than 20 meters, and the water in the waterhole changes color significantly from the periphery to the center.

The water on the shore is crystal clear, and the deeper you go to the center of the pool, the darker the color of the water, and the color in the center has changed to a dark blue and black color, and it seems that the center of the pool is very deep.

The four of them stood on the edge of the waterhole, looking up at the waterfall rushing down, the water crashing against the rocks, splashing bursts of mist, facing the sun, forming a rainbow on the mist.

"It's so beautiful!" Qianqian stared at the mist rainbow, stood by the waterhole, and praised loudly.

Zhang Xiaobin was very clear about the purpose of this trip, pointed to the direction where the pond water flowed out, and said loudly: "This canal is where my father often comes to fish." ”

The so-called canal is a small river formed by the waterfall water flowing out of the pool, the small river flows from west to east, along the mountain from high to low, meanders and disappears in the woods in front of it, there are traces of artificial repair around the small river, the mountain stone and cement, build a half-meter-high embankment on both sides of the small river, the embankment prevents the water from flowing at will in the forest, and finally flows down the mountain according to the will of people, and is used to irrigate the flat rice fields under the mountain.

Nan Zhiqiao stood on the embankment with the sampling box and ordered, "Let's start sampling." ”

Everyone put on gloves, Zhang Xiaobin began to fish for snails, and Ye Zhenzhen used a sampling bottle to collect river water samples.

Qianqian had nothing to do and felt bored, but seeing that the other three people were busy, she began to be curious again.

Qianqian wanted to get in front of her cousin Zhen Zhen to find out, but she was worried that she would be nagged by her cousin again, so she changed her mind and came to Nan Zhiqiao's side.

"Brother-in-law, what are you busy with?Is there anything I can help with?" Qianqian actively wanted to take on the task.

"No, just stand on the side and don't touch the water here. ”

Nan Zhiqiao was very serious when he worked, and he didn't notice that Qian Qian shrank aside.

After being busy for a while, the snails salvaged two bottles, and the water samples were collected, and the three of them were ready to change locations to sample again.

Nan Zhiqiao glanced at Zhen Zhen, Zhen Zhen understood, handed the backpack on her back to Qianqian, and said, "Qianqian, help my sister carry the bag, you are the logistics of this operation." ”

"Good!"

Qian Qian happily took the bag and carried it to her shoulder, while asking, "Where are we going next?"

Qianqian's question was being asked on the point, originally Zhang Xiaobin meant to go downstream along the river, but now that Qianqian asked this, he began to hesitate, and couldn't help but look at Nanzhiqiao.

Nan Zhiqiao thought for a while and analyzed: "The canal starts from here, and the downstream is flat, and the distribution of snails will spread downstream due to the influence of the water flow, and the waterfall here is a topographical transition, and it may also be a turning point in the schistosomiasis epidemic, for comparison, we will now go to the upstream of the waterfall to sample." ”

To go upstream of the waterfall, you have to climb the cliff, but the cliff is more than ten meters high, and the terrain around the waterfall is steep and slippery, so it is impossible to climb directly from the side of the waterfall.

In the team of four, only Zhang Xiaobin was familiar with the terrain, and everyone looked at Xiaobin.

Zhang Xiaobin wore gloves on his hands, held a long-rod round fishing net for fishing snails, and said, "There is a road nearby, come with me." ”

Under the leadership of Xiao Bin, everyone found a deep path in the dense woods, and the path was paved with evenly sized cyan mountain stones, which were surrounded by dark green moss, and the top of the mountain rocks had been smoothed and smoothed because they had been trampled on all year round.

Stepping on the mountain stone path, Zhang Xiaobin introduced in front: "The path here is repaired by an old couple nearby, they are from our village, but they don't live in the village, they built a wooden house to live in the upper reaches of the waterfall, they have an orchard in the downstream of the waterfall, so this path is sorted out here, in fact, there are many farmers in the mountains who live like this." ”

Follow the rocky trail all the way up and soon reach the cliff where the waterfall originated.

On top of the cliff is a large flat meadow, the meadow area is very large, about half a kilometer, the grass on the grass is not up to the knee, mixed with patches of wildflowers, all kinds of wildflowers compete to bloom, in the background of the mountain forest highlands not far away, it is like a paradise here.

Streams in the meadows converge on the edge of the cliffs to form waterfalls, and streams in the meadows are formed by water from the nearby mountains.

It's all as beautiful as a painting, and at the center of it is a small wooden house made of artificiality.