Food has always been one of the important factors restricting population growth, and only with sufficient food can the population reproduce on a large scale, this simple truth Lu Zhe must know.

At present, the population of Han is not too certain, after all, it is not so easy to do a census, and after preliminary investigation, there are nearly 8 million people on the register.

The so-called registered population is over the age of 13, and children are not counted, because the current living environment can easily cause children to die......

Lu Zhe has been preparing to encourage childbirth for nearly three years, and as life gradually becomes calm, the small life of every family is quite passable, and the baby boom has only come in the past year.

Why is it necessary to arrange in advance even to encourage multiple births? Or because of the hygienic environment, in addition, Wenwen also needs large-scale training, otherwise the baby boom will become a disaster for a large number of newborns.

It takes at least thirteen years for a generation of babies to become a labor force, and it takes at least eighteen years to become a qualified soldier, so that means that unless Lu Zhe obtains additional population from other countries, he doesn't have to worry about any food crisis in eighteen years, the problem is that everything needs to be prepared for a rainy day, and he can't wait for a crisis to come, right?

Occupy land, in order to form a population "big bang" must occupy more land, in this era when there is only one qiē population, how can it be done without enough land to cultivate!

Lu Zhe set his sights on the south to expand a large area of territory at the minimum cost, which may take a long time to develop, but once the development is successful, it will inevitably become a granary everywhere, as long as there is enough food, then it will not be a luxury for the Han Kingdom to become a country with a population of tens of millions.

Tens of millions of people, what a dominant number in the era of cold weapons, Lu Zhe hopes that before he is forty years old, he can have enough strength to march around the world, and stage the era of global colonization in the era of BC in advance.

Of course, development is important before that. The development of industry and the development of the navy have been accelerated by the war money, and the strategy for the southwest has not stopped.

Speaking of the strategy of the southwest region, Lu Zhe suddenly remembered the envoy group of the Ouluo Kingdom who had been thrown aside by himself for more than a month.

"Your Majesty, are you summoning the envoys?" Xiao He was blinking when he asked this.

The envoys of the Ou Kingdom have been coming to Nanling for a month and seven days, and they were restricted from being free at first and could only stay in the post house arranged by the Hongru Temple, and then the post house personnel were gradually given freedom after receiving Lu Zhe's order, and I believe that Gao Tong and others should also have a preliminary understanding of what kind of country the Han State is.

Lu Zhe had forgotten that there was such an envoy group earlier, but later remembered that he thought that he should let those people in the Ou Kingdom know more or less about the Han Kingdom, and he had not been summoned to wait for further news from the Southern Expeditionary Army.

Calculate the day, that area of South Asia should be in the rainy season again, and the new battle situation should be delivered to Nanling in the next two or three days.

The Southern Expeditionary Army went to invade the Ouyu Kingdom with 60,000 troops. With a total of 60,000 troops fully armed and armed, it should not be a problem to deal with the Ouluo country, which is dominated by small South Asians, but the climate in the southwest is a constraint.

The last time Lu Zhe received a report from Luo Shao was that the 60,000 Southern Expeditionary Army had just broken through the first line of defense organized by the Ouluo State, that is, the Liangshan Battlefield.

The Battle of Liangshan in the Han records broke out in the first half of summer, 60,000 Han troops and about 140,000 Ouluo troops fought offensive and defensive battles on that land for nearly 40 days, and the Han army wiped out nearly 90,000 Ouluo troops at the cost of losing 7,000 people.

It was also because of the first stage of the invasion of the Ou Kingdom that Lu Zhe did not summon the envoy group, after all, what the hell did he have to idle under the ability to destroy the country. Directly send troops to destroy its country, occupy its land, and enslave its people, what is it to do with so much nonsense.

There are still some things that seem to need to be mentioned, and Kaimingpan has sent several envoys one after another, and these envoys have all been seized by Luo Shao, who has been indicated......

For Lu Zhe. It is imperative to destroy the Ou Yu Kingdom, just like he spares no effort to deal with the Baiyue clans, and when he can destroy it, he will definitely not be soft and bury hidden dangers for himself.

South Asia (with the exception of India) can be regarded as a country is only an Ou country, and the rest seem to be city-states. After destroying the Ou Kingdom, Lu Zhe's troops will continue to point at those states. In the extermination of these countries and city-states, South Asia should be left with only a few monkey-like savages, and then a new hunt bounty should be posted. Let the brave men of the people go to the mountains and forests in droves to hunt the savages, and exchange the heads for bounties.

Too cruel, too brutal? What a joke! For Lu Zhe, he should be responsible for the ethnic groups under his rule, and it is better for the rest of the ethnic groups to all die. Therefore, cruelty to people other than one's own race is not called cruelty, and cruelty is not called cruelty. Isn't there such a saying? His enemy, my hero.

The invasion of the Ou Kingdom will be a long-term war process, and the area can provide the battle season for about three months a year, so that the number of Han troops participating in the invasion is too large, and 60,000 is the number of no more and no less after repeated calculations.

In addition, Luo Shao's troops under his command eliminated nearly 90,000 enemy troops in the Battle of Liangshan, which should have wiped out at least half of the army of the Ou Yu Kingdom. If Luo Shao's intelligence is not wrong, the total population of Ouluo Country is about 800,000, and you can imagine how many young people such a country can muster.

Of the 90,000 young men who were wiped out at one time, how many of them could afford to lose 90,000 young men? After eating the lessons of the Liangshan Campaign, as long as there are still smart people in the Ouluo Kingdom, it is estimated that there is no possibility of a large-scale battle between the two sides after the Liangshan Campaign.

Luo Shao also has a clear understanding of this, he sent to the center of Nanling pointed out that in the future war situation, the Han army will march all the way, one after another to capture the cities of the Ou Yu country, but the situation that the Han army will face will change, the Ou Yu country is very likely to learn the tactics of the Baiyue people, a large number of people take to hide in the deep mountains and old forests, and the armed forces are a small force of attack mode.

Guerrilla warfare? Then the change of events has also occurred, and the scheduled number of 60,000 southern invasion of Han troops will definitely face a shortage, after all, there is always a garrison to capture a place, and the strength will be repeatedly thinned. Lu Zhe had already issued an order to gather 100,000 troops to go south for reinforcements before Luo Shao asked for reinforcements.

There were only 60,000 at the time of the invasion, and another 100,000 reinforcements were sent when the momentum was already determined? It's too uncomplicated, military normal!

But has there always been any norm in war? There is no such thing as a normal state of war, and some are only subject to change. Before the initial invasion, because of the logistical environment, the logistics line could only guarantee the supply of 60,000 people, and with the expansion of the invasion roads and the understanding of geography, the logistics line will inevitably be optimized...... In non-jargonomic terms, it means that the environment for transporting supplies is better, and more people can be supplied with supplies, so there is no problem with increasing the number.

The 100,000 new troops who participated in the invasion of Ouyu did not need to be deployed too far away, and after the arrival of a new round of troops from Nanling to Lingnan, the headquarters of the Southern Expeditionary Corps originally stationed in Lingnan had enough troops to go south.

The 100,000 people who went to Ouluo had a lot to do, they had to continue to build roads, and at the same time, they had to liberate the garrison troops who had invaded earlier, and they also had to participate in the elimination of the Ouluo forces.

In the final analysis, the Southern Expeditionary Legion is the most adaptable legion in Lu Zhe's hands to the South Asian climate, and they are both going to build and kill. In addition, Lu Zhe will also give Luo Shao a few new tasks.

The first is to explore the coast as much as possible, find a natural harbor for the navy or establish a port; The second is to send people to explore the way to continue northward to understand what kind of countries or forces exist in the north, so as to make advance preparations for continuing to march to the north of South Asia in the future. The third is to cooperate with the professionals who go to explore resources.

Sure enough, Lu Zhe was looking at the geographical environment at this time with the eyes of a modern person, and he didn't know how difficult it was to go north from that area of Vietnam.

In the current ecological environment, the Southern Expeditionary Corps will explore the surroundings and they will find that there will be a large plain (Thai region) in the west, and a large mountain range in the north. Even if the men sent out by Luo Shao succeeded in climbing the endless mountains after many hardships, these people would definitely be given the arbitrary step of continuing to move forward by a river wider than the Yellow River, and then they would be lucky enough to cross the river to reach the north bank, and they would have to face a grassland with an area of at least 300 miles, and then walk north for about 500 miles, and it should be an endless mountain range.

It seems that during World War II, the Chinese expeditionary force entered Burma, and when facing the vast forest, it was almost wiped out after just climbing a few mountains, which was already the case in the industrial age at that time, and did such a thing in more than 200 BC......

Misunderstanding, Lu Zhecun is a big misunderstanding, the places he invaded are all populated, no matter how desolate they are, they are more or less developed. And now, except for the later part of Vietnam, most of the South Asian region is a no-man's land, that is, an area where human beings (regardless of race) have not set foot foot, and they are completely different.

Fortunately, Lu Zhe is still developing a naval army when it is difficult to get through by land, although the development process is slow and there are many accidents, but under the repeated accumulation of technology and experience, if the land route is not passable, it can still rely on the future navy to carry out invasion operations...... (To be continued......)