PS: Anti-theft chapter, will be revised later, please forgive me for the inconvenience

The four girls came up and looked at the two places of Meituo Lake and Heishui that Li Yu pointed to on the map, and they were even more puzzled. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

"It's true that there are fish in Meituo Lake and Heishui, because there are fish in all rivers, lakes and seas in the world, but it doesn't mean that there are enough fish in the rivers and lakes to meet the daily food of tens of thousands of soldiers, right?"

"The most important thing is that even if there are fish, it takes a lot of fishermen to catch them. Could it be that Jun Xun wanted to let the Xuanwu Guard, Phoenix Guard, and Zhenjun Army stationed in Meituo Lake and Heishui go fishing? ”

Li Yu was full of black lines, and he asked the local garrison to go fishing, isn't this an opportunity for the Heishui people hiding in the mountains and forests? It's about the same to take a portion of it fishing.

"You should take a closer look at the information brought back by the Lelanghai expedition and the northward expedition about the rivers around Heishui and Meituo Lake."

The fourth daughter and Uncle Wang looked at Li Yu blankly, and Xing'er was scolded: "Who is going to read the red tape adventure record!" ”

Well, Li Yu had to explain to everyone: "Every summer and autumn, salmon living in the sea will travel upstream from the Heishui estuary in groups, and a large part of them will enter the Ussuri River and finally reach Meituo Lake to spawn. Salmon also swim upstream from other rivers in the Mae Tuo Lake Governorate and the Heishui Governorate, but less salmon enter the Black Water. During this time, it is also the annual salmon migration season that the local Black Water Tatar people look forward to. ”

"Are there a lot of fish?" Apricot asked.

"A lot!" Li Yu replied affirmatively: "There are so many that the surface of the Ussuri River is stirred by the swimming of fish like boiling boiling water, and the slightly shallower part of the river is almost filled with migratory salmon." A person can catch several salmon by throwing a wooden spear into the river at will, and he can insert a salmon of about ten catties into the river at will, and a net can be cast down to pull back a salmon of about ten catties of a hundred catties. The local Black Water Tassel people catch a season of fish, dry it, and mix it with other foods to eat for a year. ”

"Jun Xun, what you said is too exaggerated, right?" Xin'er is a little unbelieving, about the Ussuri River she has also seen the information brought back by the expedition, the river is about 90 zhang wide, such a wide river, will the river be shallow? Jun said that there are so many migratory fish that they can stir up this river and tumble like boiling water, which is too untrue. followed Xun Jun from Guanzhong to the Korean Peninsula, and never saw or heard of it.

Xing'er, Ling'er, and Mei'er nodded in agreement with Xin'er's assertion, and Uncle Wang, who was dozens of years old, looked at the five nobles arguing with a blank face.

Not convinced? You'll be convinced in a month's time. Li Yu said confidently: "There are many things in this world that I haven't seen with my own eyes, which is really hard to believe. ”

"Jun Xun, you haven't been to Meituo Lake and Heishui." Ling'er, who has a cute baby face, had to be reminded, lest Jun Xun be righteous and awe-inspiring to fool people.

"Ahem>< I haven't been there, but there are two expeditions with hundreds of people who have seen it with their own eyes."

Li Yu can't say that I saw it on the Internet in my previous life! I had to continue to be interrupted by Ling'er in a serious way, "For example, Xing'er just said that there are fish in all rivers, lakes and seas in the world, I don't believe it." ”

"If there is water, can there be no fish?" Xing'er was shocked by Li Yu and questioned, who has ever seen rivers and lakes without fish in the world?

"The world is so big that one day I will take you to see a lake without fish." Li Yu said inscrutablely, causing a blank of eyes.

"Hmph, Jun Xun bluffs." Xing'er was not convinced, with a standard goose egg face, and left the hall with the thin sword in her waist.

Facing the questioning eyes of Xin'er, Ling'er, and Mei'er, Li Yu had to laugh twice, he couldn't tell everyone that there was a Dead Sea in the Jordan Valley tens of thousands of miles west of the Tang Dynasty, and it was a lake with water and no fish, right? There is also the Salar de Uyuni in South America.

"We believe the fish that Jun said for the time being, but you have to have people to fish, there are not many garrisons in the two governors' mansions, you can rest assured that they will go fishing?"

In the face of Xin'er's question, Li Yu had to state again that during the salmon migration season, there are too many salmon in the Heishui and Ussuri rivers, and only a small number of people hold large nets and wait for rabbits in the shallow water area to catch salmon in a steady stream, not to mention that it is possible to catch hundreds of thousands of catties or millions of catties.

Salmon migration rivers are not limited to the rivers that flow into the sea at the Meituo Lake and Heishui Governorates, and there are also several rivers in Liaodong that flow into the Yellow Sea, which can make the local government organize the people to catch fish and buy them at a reasonable price.

Li Yu then sent people from the Yanwang Mansion to build canning factories in three places, and made the caught salmon into canned fish locally, and then transported it to the front line to meet the meat needs of the army's southern expedition.

Xin'er listened to Li Yu's plan to catch salmon for canning, and after thinking about it carefully, she had to tell Li Yu a reality: "Jun Xun, there are not many kilns in Anton, and I am afraid that there are even fewer clay pots needed to produce canned food." At present, the army is about to set out, and it will take a long time to go from fishing to canning in the three places. ”

"Therefore, I intend to put you in charge of the salmon fishing and the construction and production of the canning factory, and all the manpower of the royal palace and the capital protection house will be mobilized by you."

Li Yuhe told his intentions, and Xin'er followed him for more than ten years.

PS: Anti-theft chapter, will be revised later, please forgive me for the inconvenience

In the days that followed, Li Yu would pick up the "Guide to Geography" whenever he had time to study it. The book is divided into eight volumes, the first of which is a general theoretical overview, expounding Ptolemy's system of geography and revising Marinus's cartographic method. Volumes 2 to 7 contain a list of 8,100 locations on Europe, Asia, and Africa, and use the latitude and longitude network established by Hipparchus, dividing the circumference into 360 parts, and indicating the latitude and longitude coordinates for each location. Volume 8 consists of 27 maps of the world and 26 maps of local areas.

In his book, Ptolemy argued that geography was a linear description of the entire known area of the earth and everything related to it, that is, drawing graphs and replacing geographical descriptions with place names and surveying lists. In his Guide to Geography, he used a smaller value of the circumference of the earth measured by Bosidonis, which made Li Yu completely unimprinted, and he couldn't help but think that the circumference of the earth could be measured at that time. Hundreds of years ago, the Romans went as far east as Persia, and having heard of the Malay Peninsula and the Silk Kingdom (i.e., China) could not determine the distance between the two. To the west to know the farthest point Ptolemy himself speaks of in his book as the Canary Islands, and to one of its westernmost islands as the prime meridian of longitude. According to the memories of previous lives and the impressions of the map, the prime meridian is set at the Greene Site Observatory in the United Kingdom, and the longitude of this Canary Islands is obviously not far from the 0 degree longitude of the Greene Site Observatory in the United Kingdom.

After comparing the latitude and longitude of the list of 8,100 locations on Europe, Asia, and Africa listed in volumes 2 to 7 of the book, and the longitude and latitude of these familiar places in my memory, it is found that the latitude gap between Alexandria, Rome, Jerusalem and other historical cities where Ptolemy lived is not too large, but the longitude gap is inevitably too large, and Li Yu estimates that at least the difference with the actual longitude is more than ten degrees.