Winter is passing away, the snow and ice are melting, and everything is revived.

Taking advantage of the time when the ice disappeared, the capital city stepped up its work, and finally erected the railroad tracks in the first month of the 'spring', and initiated the first train 'exchange' between the four cities.

With the train, everything is much more convenient, given that the Three Castles of Baisha only serve as a buffer zone to protect the Pure Land City. Liu Ye decided to cancel the Three Cities and merge them into the Pure Land City.

Most of the population of the three cities was also subsumed into Pure Land Castle, leaving only the relevant military garrison to guard it. Liu Ye's meaning is very clear, it is to turn these three cities into military defense areas.

Most of the residents of the Three Cities are also very happy, compared to the Pure Land City, the living environment of the Three Cities of Baisha is undoubtedly much worse, and they certainly live in a place with a better environment.

At the same time, Liu Ye made a prospect estimate of the Pure Land City, believing that the current scale of the Pure Land City, with a population of 3,000, is enough, and the remaining people are all filled in the capital city and Haiwei City, which also solves the urgent needs of the capital city and Haiwei City.

With the opening of the train, the resources of the Pure Land City are no longer so scarce, and all the urgently needed resources can be obtained within one to two days.

The most important thing is that the infrastructure construction personnel who came from the capital city built a series of foundation projects for the Pure Land City.

The new batch of graduates from the two colleges in the capital city had just finished their studies, and Liu Ye immediately arranged for them to practice in the Pure Land City.

The terrier also sent some more potential assistants to help in Pure Land City, these assistants have enough experience with the terrier, but they are currently lacking in exercise, and now is the best opportunity.

There are no metallurgical factories in Jodo Castle, but some abandoned factories still exist as the core of the big city in the past, and they should be usable as long as they are rested.

Of course, if you want to make steel, you naturally have to have a power plant.

The city itself is powered by some biogas power plants, which were originally built with the help of the city, but the voltage and power of these biogas generators still cannot meet the needs of the iron and steel metallurgical plant.

Thinking of this, Liu Ye was ruthless and decided to establish power grids in Dadu City, Pure Land City, Haiwei City and Asuka District to balance the energy supply of the four places.

However, building a power grid is not an easy task, and it is not easier than erecting railroad tracks, which is time-consuming and labor-intensive. Just thinking of the benefits after the establishment of the power grid, Liu Ye still made this decision.

Now the population of Dadu City and Haiwei City is sufficient, and because of the increase in labor force, the two cities have once again entered a period of rapid development.

However, Pure Land City is currently facing many problems.

In order to solve these problems, Liu Ye personally sat in the Pure Land City and set out to solve them.

At present, the population under Liu Ye has reached 15,000, and there are tribes who come to take refuge every day.

However, the rapid increase in population has made it increasingly difficult to manage.

Seeing this, Liu Ye issued a new directive, and he decided to establish a hierarchy of city citizens.

At present, all the inhabitants of the city are divided into levels, according to their usual production and labour. 100 pieces of production tasks are completed on time every day, and an additional 50% of production is added, and another point is added.

Where improvements are proposed for adoption, 10 to 100 points are added as appropriate. Those who have won the ranking in various competitions will be given 10 points to 100 points, and those who are brave in battle will be given 10 points to 100 points.

At the same time, one point will be deducted for failing to complete the production task on time, and if the work has been arranged not to participate more than three times, three points will be deducted for each time.

One hundred points are level 1, level 2 1,000 points, level 3 5,000 points, level 4 10,000 points, level 5 20,000 points, level 6 30,000 points, level 7 40,000 points, level 8 60,000, level 9 100,000.

Only city citizens who have exceeded the first level system can get positions, the second level can get ordinary management positions such as foreman, the third level can get city management positions, the fourth level can get middle and high level plants, and so on.

The position of the general of the Northern Martyrdom is the ninth level, and Liu Ye's position of the city lord is the rank above the ninth level.

Each level of the townsfolk received a different amount of food rations, the higher the level, the higher the amount of points, and these points were equivalent to the money in people's hands, which could be exchanged for items.

After exchanging items, the points level of the citizens will remain the same, but the number of points available will be reduced.

The introduction of this hierarchy took Liu Ye's painstaking efforts, and he had to take into account both fairness and people's positive 'nature'.

He didn't want to build a city with a strict hierarchy like the slave feudal society of the past, he just wanted to further 'stimulate' people's labor force to develop the city.

Therefore, he also made it clear in the decree that these ranks only represented the productive capacity of the city's citizens, not their status.

It's just that Liu Ye thinks so, but what this regulation will be is not completely decided by him.

The introduction of the hierarchical decree did not cause much resistance among the townspeople.

They had already lived in a hierarchical post-apocalyptic world, and they had long been accustomed to such an environment. Liu Ye just brought him to the table, and it wasn't a big deal.

And Liu Ye's decree has obvious benefits, first of all, this point is like money in the past, which can be directly used to buy items, making the commercial 'exchange' in the city more clear and transparent.

Secondly, the point system can be said to greatly stimulate people's labor enthusiasm', in order to obtain higher points, improve the rank, so as to get more food rations, more wealth and greater rights, everyone will take the initiative to seek all ways to improve the points.

In the past, labor was only done passively, but now that there are rewards, people will naturally rush to work hard. Once competition is formed, the improvement of labor efficiency will be rapid.

*************

Just when Liu Ye was having a headache for the development of Pure Land City, under a small hill two hundred kilometers south of Pure Land City, a team of people was carefully surveying the terrain.

In any case, relying solely on scrap steel from the ruins is not a long-term solution. After the corrosion of these scrap steels over time, most of them have long been damaged and cannot be fully utilized, and there will always be some losses. Moreover, the steel remelted in the furnace cannot be compared with the one-time steel in terms of texture and density.

Moreover, the abandoned coal mine near the capital city is also about to run out, and if you don't think about it, you will definitely be in trouble.

Resources are always the top priority of urban development.

For a city to be sustainable, it must have a mineral deposit that can be mined to provide an endless supply of resources.

Otherwise, one day it will be coerced by other cities, just like Haiwei City used its own salt resources to coerce other cities.

In the past, Pure Land City relied on its own 'medicine' people to occupy the surrounding land, and ordinary cities did not dare to complain, so they had to pay tribute to all their resources.

But it will be different in the future, even if the six northern cities will not come on a large scale, the so-called resource blockade will still exist. The mineral deposits in the north are abundant, and the six cities in the north occupy most of them, and Liu Ye will definitely be stretched thin if he doesn't want to do anything else.

When Liu Ye occupied the Pure Land City, he sent someone to survey the terrain nearby to see if there were any veins that could be used. Just because there is no area around the capital does not mean that there is no near the Pure Land City.

These people specially 'gate' surveyed the vicinity of Pure Land Castle, and during this period of time, they found some ore veins that were relatively small in quantity, but were more precious in the past, such as silver and gold mines.

If the gold and silver were placed before the war, Liu Ye would definitely be able to make a small fortune. But today's last days are of no use at all, in addition to being good-looking, these things can't be used as weapons and armor, they're useless, and no one will want these things.

What Liu Ye wanted most were iron ore and coal mines, but in the past, they could be found everywhere in China, but now they are difficult to find.

"Captain! The geology here is a bit weird! A young man in thick leather armor said to the middle-aged man next to him, and after a careful investigation, the middle-aged man said, "It's a little strange indeed! This stone 'color' is slightly red, which is very phenomenal as the city lord said! Lin Li, let's dig a little deeper and see what's there! ”

"Yes! Captain! ”

The young man immediately removed a whole set of tools and dug up with the young people around him. They all probably have the strength to be able to be the first level of Xuan Qi, and digging the ground is not a difficult task for them.

These people are all recent graduates of the college, and the pit dug is very deep, but it will definitely not collapse.

"Bang!" After a muffled thud, the young man's shovel hit something hard.

"Look! What is it! "There was some 'agitation' among young people.

The captain bent down and pushed the dirt away, revealing a hard stone wall behind the dirt. There are slight black and red spots on the stone wall, which is the characteristic of iron oxide that Liu Ye said.

The middle-aged man slammed into a stone and broke off a stone, and the young people around him looked at the middle-aged man with admiration on their faces.

At this time, it is the brightest time of the day, and the middle-aged man looks at the sunlight, and the faults of the stones are distributed with flint-like red 'color', like fire clouds in the sky.

"This ...... This is ......" The middle-aged man recognized it for a while, and said excitedly: "That's right! This is the iron ore that the city lord is talking about, and it is also iron ore with high quality purity! ”

"Haha! Captain, we've done a great job this time! The points we get this time are enough to move us up two levels in a row! The young man shouted in surprise.

"Look at your excitement! All you have in mind are points! Don't worry! Let's explore the veins here first! The middle-aged man frowned, but his eyes could not hide the excitement of discovering iron ore.