The deep pits dug around the paddy fields gradually filter out the water in the surrounding silt, and the ponds formed by the deep pits are enough to provide the water and fertilizer needed for rice growth in this annular paddy field.

Of course, in order not to hinder the construction, the filtered sewage was pumped into another pool of water for temporary storage.

In a year of great drought, this sewage is a good organic fertilizer, and it is shameful to waste it.

In this way, first the higher mounds were converted into paddy fields, and then the higher terrain was transformed into circular paddy fields.

The silt around each of the paddy fields has been cleared, revealing the brown rock formations below, forming trenches 16 or 7 meters deep.

After the renovation of all the places was completed, this area of water was almost covered with neat and independent circular paddy fields, and the gaps between the paddy fields were all spaces that could store water.

The distance between the circular paddy fields is also maintained at more than 25 meters, and the widest place is the intersection of those waterways, which is more than 60 meters long and wide.

Although these waterways were not deliberately planned, the gaps between these circular paddy fields that naturally formed seemed to have been deliberately arranged, and the intersections of the waterways were wide enough to accommodate more water transport platforms and thousand-ton freighters to stay and pass.

And the very regular waterway extends in all directions, and if you want to reach the location of any circular paddy field from one place, you can plan dozens of routes with almost the same distance.

In such a situation, the blockage of any waterway intersection will not affect the normal operation of the entire water network transportation.

In order to prevent everyone from getting lost in this extensive water network, Wei Minsheng also numbered these paddy fields according to the grid numbering method in the squares drawn according to latitude and longitude with the help of high-definition digital maps.

In order to improve the accuracy of the number, each position number is composed of a letter and a number.

The letters use only ten letters from A to J, and the numbers are ten numbers from 0 to 9.

If you want to express a more refined and accurate position, just add a number to the end of this number.

FOR EXAMPLE, A SQUARE DIVIDED BY INTEGER LATITUDE AND LONGITUDE HAS A MAXIMUM LENGTH AND WIDTH OF 111 KM, AND IT IS VERY DIFFICULT TO FIND THE LOCATION OF A PADDY FIELD IN AN AREA OF THIS SIZE.

However, the current Huaxia Kingdom only spans two integer latitude and longitude regions at most, and this Yunmengze is almost all within one region, so there is no need to express the first-level latitude and longitude region in daily work and life.

AFTER DIVIDING THIS AREA INTO A 10 BY 10 GRID WITH LETTERS AND NUMBERS, THE ACCURACY OF POSITIONAL EXPRESSION IS IMPROVED BY A HUNDREDFOLD, AND THE LENGTH AND WIDTH OF A GRID ARE ONLY 11 KM.

If A1 refers to an area with a side length of 11KM, then A1C3 refers to an area with an edge length of 1KM, and A1C3H9 can express an area with a side length of 100M, and only needs six sets of numbers at most, that is, twelve characters to accurately represent a one-square-meter location.

In the absence of satellite navigation and positioning, the use of high-definition maps to number locations can effectively improve people's ability to locate accurately, but for some people with low cultural knowledge, there is still a certain degree of difficulty.

Therefore, Wei Minsheng customized a map navigation software in the real world, which is based on a high-definition digital photo, plus the road planning function of navigation.

Since there are no satellites or base stations for positioning, you need to manually determine your position based on the numbers and topography that can be seen around you.

Of course, the software still reserves an interface, and when conditions exist in the future, Wei Minsheng can use this interface plus his own automatic positioning module to achieve complete positioning and navigation functions.

Once you've decided where you are, you can choose where you want to go.

Based on the full location number, there are two ways to do a quick positioning.

One is to directly enter this complete location number in the address bar, and you can directly locate the address to the exact place.

The second way is to use the map to make a selection.

The map click interface is a 10 by 10 grid, with each grid marked with a letter or number.

The background of the grid is a high-definition digital map, which can be set to the default display level and location of the map to the area you use frequently.

For example, if the frequently used area has been determined at the address level of A1, then you can click on the C3 grid with your finger to determine the position of H9.

The digital map of the grid is enlarged to the size of the screen, and then continue to click on the H9 grid, and the exact location and complete map of the H9 grid are displayed on the screen of the phone.

In this way, up to five consecutive clicks can be used to locate a precise spot one square meter square.

The lower the default display level, the faster the way to click on targeting.

Because such APP navigation software has completely abandoned the complex positioning method, there is no complex operation, and there is no need for the support of the corresponding positioning hardware, as long as it is a large-screen smartphone with touch function can run.

Therefore, Wei Minsheng carried out the old mobile phone recycling business through the Minsheng canteen, and one or twenty yuan can be recycled into a smart phone with quite good performance.

Customers at Minsheng Canteen are also happy to sell these discarded smartphones to Minsheng because the recycling price is more cost-effective than exchanging old phones for stainless steel basins.

And judging from the process of Minsheng Company's acquisition of other idle items, its credit is more reassuring.

After these old mobile phones are processed by restoring factory settings, deleting personal information, cleaning dust, replacing them with a unified data interface and replacing them with new batteries, they also need to install this mobile phone "navigation" APP customized by Wei Minsheng.

This mobile phone with the "navigation" software installed still has the call function of the mobile phone, but there is no corresponding mobile phone base station in the other world, so it cannot be used for the time being, and can only be used as a handheld navigation device.

Of course, after such processing, the sales price of the mobile phone in China is not a few dozen yuan.

Although its single function, small amount of calculation, the size of the computing unit and memory of the mobile phone has little impact on the operation of the software, but after all, it is still a smart phone, and there is still a large room for expansion in the future.

For example, adding some learning functions, a learning "artifact" that can be carried around, is something that these aborigines who are enthusiastic about learning dream of.

Therefore, Wei Minsheng set a calculation formula, and only need to input several main indicators of the mobile phone to calculate the sales price of the mobile phone.