On the side of the moat of Chang'an City, Li Ke, the king of Wu, and his housekeeper and guards were measuring the water quality of the moat, so as to make a general assessment of the quality of the groundwater on the ground in Chang'an. Pen, fun, pavilion www. biquge。 info

The guard named Liu Xin, under the supervision of the chief manager Yuan Kui, looked like a revolutionary who died generously, and carefully inserted the marked bamboo pole into the water, and the bamboo pole that was more than a foot long was inserted into the moat under the trembling of the guard.

Li Ke, who had a premonition, saw that the red dot was completely invisible, and immediately shouted: "Stop."

When Liu Xin heard this, he stopped as if he had been amnestied, and immediately pulled out the bamboo pole, and Li Ke estimated the length of the bamboo pole immersed in the water, about half a zhang and slightly more.

Yuan Kui saw Li Ke looking at the length of the bamboo pole with red dots, and couldn't help but look confused, and wondered: "Your Highness, is this here?" ”

"Oh, you said this bamboo pole, Lone marked a dot here, and then inserted it into the water, and when you can't see the red dot, take it out, and then you can get the clarity of the water." Li Ke pointed to the small red dot at the tip of the bamboo pole.

"Then why did Your Highness measure the clarity of the water?" Yuan Kui still didn't understand the role of river visibility.

"The clearer the water, the cleaner it is, insert this bamboo pole into the water, the deeper it is inserted, if the red dot is very deep to be invisible, it means that the water is very clear; If it is sewage, then the red dot will not be visible if it is inserted into the water. The purpose of measuring the water of this moat is to see whether the water is clear and clean or muddy and smelly, so as to make an assessment of the overall water quality of Chang'an City. Li Ke said lightly.

"Assessment?" Yuan Kui obviously didn't understand what assessment was, but he understood that Li Ke just wanted to see if the river was dirty, and he also exhaled in his heart, it turned out that His Royal Highness didn't want to stab the soul of the plague under the water, that's good, that's good.

It's not that Yuan Kui thinks about it, the ridiculous things that the princes and grandsons did in ancient times are really countless, because the princes have no small goals, or they don't dare to think about his goals at all, so they can only change the law to have fun, and the strange thing of stabbing the bottom of the river can only be imagined by these idle and panicked dragon sons and grandsons.

Li Ke saw that Yuan Kui no longer asked, and carried some self-righteousness in his heart, well, it is not difficult to tell the ancients about the proper noun of river visibility that only later generations understood.

In fact, even in later generations, only a few professionals who study water conservancy and environmental protection will understand. Later generations will look at the landscape fish when visiting the lake and fish pond in the park, and some of the pond water is clear and you can see the colorful ornamental fish in the depths of the water, and some of the turbid water can not see anything clearly. In his last life, Li Ke often dealt with liquid perfumes, and knew that the clearer and more translucent the perfume, the better it looked, and naturally he had also learned the visibility of liquids, and no one had ever seen a lotion of cloudy perfumes, right?

Li Ke looked at the moat that the pollution level was not much better than the city river in later generations, and he was also drunk, who said that there was no pollution in ancient times, although there were no plastic bags and packaging bags and other domestic garbage floating on the river surface of Chang'an City, but the visibility was only about half a zhang, what is this concept? If the rivers around the ancient city are all this visibility, then a little water hyacinth, cyanobacteria and green algae or something are estimated to stink water, fortunately, there is no species invasion now, or the entire water system of Chang'an will fall into a "red tide". The visibility of the rivers in later cities is only slightly worse than this, but it is possible that the chemical composition of the urban rivers in later generations may be a little more than that of today.

Think about it, the entire Chang'an City millions of people after eating and drinking Lazar waste water is discharged into the moat and the connected inland river, where can the river water be clean, Li Ke asked the guards to take water samples in different water layers of the river, for later use.

"Aque, where is the nearest concentrated well in the workshop?"

"Your Highness, although this place is the closest to Tongjifang, the well of Tongjifang is to the north, and the water intake of Andefang is the closest to here." As a Chang'an Tong, Yuankui One Hundred and Eight Fangs are all familiar with it, and he answered Li Ke's question without thinking.

"Then let's drive to Anderfang." Li Ke waved his hand and was about to get on the horse and return to the city.

At this time, a group of people came from afar, it looked like the convoy of princes and ministers from a distance, but the queue was extremely neat, and there were sergeants holding the festival to show up, Li Ke looked at it, who else could use the army as a guard of honor to open the way?

The convoy was heading towards Qujiangfang, but when it came to the vicinity of Li Ke, it stopped, and the young man with a weakened face under the huge vermilion chariot was now His Royal Highness the Prince.

Li Ke was about to give the prince a brotherly gift, but was helped by the prince and said with a smile: "You and my brother, why be polite." The prince's face was slightly better than before, obviously what Li Ke passed on to the prince yesterday had a curative effect, and it was not as gloomy as yesterday.

"I heard that you are going to recuperate for your sister and sister Lizhi who moved to Furong Garden, so I came to send you some things and congratulate you, this Furong Garden has been greedy for a long time, but I didn't expect my father to give it to you without thinking about it, haha."

Obviously, Li Chengqian can't go on, and if he continues to talk about it, he should say that Li Tai, the king of Wei, has also coveted Furong Garden for a long time, Li Chengqian and Li Ke are both smart people, so naturally they will not mention King Wei on this occasion, and in the end, the prince had to laugh twice as a cover-up.

Li Ke hurriedly picked up the topic and said with a smile, "If the eldest brother is interested today, I would like to accompany the eldest brother Furong on a trip." ”

"Very good, you and I are in the same car, and we will travel to Hibiscus together!"

Li Ke gave a few words to Yuan Kui beside him, and asked him to go to the well of Andefang to take a water sample, send it to Furong Garden, and get on the prince's chariot.

The chariot moved slowly, but Li Chengqian and Li Ke in the car fell into an awkward silence. In their previous lives, Li Chengqian and Li Ke were just nodding friends, and they were not brothers of the same mother, and they were not very close. It's a little more like an opponent. So getting into the carriage is embarrassing, and cancer inevitably committed.

Not long after, Li Ke closed his eyes and whispered: "Big brother, at this moment, it is really not a good time for you and me to meet. “

Hearing Li Ke say this, Li Chengqian suddenly stood up nervously, as if he remembered something, yesterday Li Ke secretly helped him, and passed out a famous Yuanzheng poem, today he blatantly contacted Li Ke, and their attitudes towards each other are very different from the past.

Li Chengqian's face turned pale, Li Ke waved his hand, and had to continue: "If you come, you will be safe, since you have met, let's sit down and talk." Besides, the one in the Imperial City who should have known already knew. “

is worthy of being the crown prince, Li Chengqian's heart calmed down after a while, and looked at Li Ke calmly: "You mean that my father saw it?" ”