"However, I hope that the Nine Heavens Empire will still be able to make some efforts, such as completely controlling the other end of the passage entrance, so that it will be convenient for communication between our two worlds!" Liu Xu said.

"Good!" The Mountain King thought about it for a moment and felt that there was nothing wrong with this request, because this was originally what the Nine Heavens Empire was going to do next.

There are a total of five princes in the Rose Empire, but now the strongest of them has passed away, in terms of the strength of the prince, the Rose Empire has fallen behind, it is the time for the Nine Heavens Empire to take advantage of the victory to pursue, and the next step is to directly launch an offensive against the mainland of the Rose Empire, and it is not difficult to take this area.

"Also, I hope that between our two worlds, we can complement each other in some resources!" Liu Xu finally said.

"Complementarity of resources?" The Mountain King was stunned for a moment, and then said in surprise, "I don't know what resources your world needs?" What resources are available to us? ”

"Quite simply, our world needs a metal called Forbidden Gold!" After Liu Xu finished speaking, he handed over a piece of forbidden gold to the Mountain King, who took it in his hand and played with it for a while, then said in surprise, "Isn't this Mountain Gold?" ”

"Oh, are there a lot of such metals in the Nine Heavens World?" Liu Xu immediately asked curiously.

"Not too much, but not too much!" The king of the mountain smiled, "We have found a lot of such metals, but they are of little use, and such metals are extremely difficult to refine, so even if the corresponding veins are found, no one will take the initiative to mine them!" ”

The king of the mountain replied very honestly, if it was Liu Xu, it would definitely render the mountain gold as precious immediately, and then directly ask for a big price.

"Okay, we need a lot of these metals, if you can't refine them, then just mine the ore, and we'll take care of the extraction!" Liu Xu immediately said, "So correspondingly, does your country need any missing resources?" ”。

"We need food, lots of food!" The King of the Mountains said without thinking, food is always the most lacking thing in the Nine Heavens Empire, many cities have broken out in food crises, and the level of agriculture in the Nine Heavens Empire is not high, and it is okay that a large number of men were forced to work in the fields all their lives.

But now with the advancement of industrialization, a large number of agricultural people have become industrial population, and men are unwilling to do some hard work after the age of 35, especially unwilling to go to the fields, so the food of the Nine Heavens Empire and even the entire Nine Heavens World has always been quite lacking, which has led to the population growth rate of the whole world is now a little weak.

A large part of the bankruptcy of the Mother's Association is also due to the high price of food.

But then again, in fact, the entire Nine Heavens World is completely a perfect world where God appreciates food and eats, and the overall cultivated land rate is as high as about 45%.

This ratio is actually very perverted, for example, the arable land rate in China on the earth is only 12%, the arable land rate in the beautiful country is only 18%, and the global arable land rate is about 15%, so the overall arable land rate of the nine-day world is as high as 45% is actually quite perverted, and the probability of good weather is extremely high, and it is rare to have several droughts or floods in a hundred years.

This is also the reason why the Nine Heavens World has been in a matriarchal society for a long time, because even in the feudal era, there is no need for men to take the initiative to invest in heavy agriculture or animal husbandry, and women can easily get food to feed a whole family.

But this is also an important reason why the agricultural level of the nine-day world has been lagging behind, the same example can also be found on the earth, for example, as the luckiest country on the earth, India's arable land rate is as high as 52%, which is more perverted than the 45% of the nine-day world, and because India is in the tropics, there is almost no winter, and the annual grain can naturally be three crops, compared with China, it is really heaven.

However, India's agricultural level is extremely backward, far inferior to that of other surrounding countries, and the fundamental reason is that there is no need to work hard to cultivate the land, but there is no interest in developing agricultural technology.

Ahem, to get back to the point, food has always been an important reason for restricting the development of the Nine Heavens Empire, coupled with the emancipation of a large number of male populations, resulting in the loss of the advantage of a large number of men working in the fields day and night in the past.

This is also an important reason why the Nine Heavens Empire took the initiative to promote the marriage system, in addition to making men pay money, it also hoped that men could return to the land to farm.

But this was obviously a difficult thing to do, so when Liu Xu took the initiative to ask what the Nine Heavens Empire needed, the Mountain King did not hesitate to propose food.

"No problem!" Liu Xu immediately agreed without thinking, in the past few years, with the development of the 23rd Eternal Reflection Field, a large amount of land that does not have to worry about the Reflection incident has been reclaimed, and after modern cultivation, the yield is very amazing.

The annual grain output of the three original cities is already equal to 1/3 of the world's grain production, and in the next few years, it will be on par with more than 100 other cities.

Coupled with the fact that the white elephant world is still developing agriculture and more land is recovering, the grain is still in a state of large accumulation, and the price is falling every year, and the author's world can't even digest these excess grains, and Liu Xu is also distressed.

Now, with the Nine Heavens World, these grains have a suitable place to go.

Liu Xu immediately had a heated discussion with the king of the mountain, and finally reached a price exchange agreement for one ton of mountain gold ore in exchange for three tons of grain, and both parties felt that they had made a lot of money.

After reaching these consensuses, the Mountain King returned to his own world with a full of surprises, originally when he went home, the Mountain King was also worried that there would be a large army of the Rose Empire sniping, but he didn't expect the Rose Empire to withdraw very simply, there was nothing in the entire area, not a single soldier could be seen, and all disappeared without a trace.

And the way back was also unimpeded, and the four princes took the nine generalissimos and walked out of the blockade area directly, and then opened the void and returned to the Nine Heavens Empire.

But if you think about it, it's normal.

Although the princes of the Rose Empire have gone back to three, the power of the world in the bodies of these three princes has been exhausted, and their respective Xiaotian worlds have also been damaged to varying degrees, with a large number of casualties.

And the most important reason for the Rose Empire to retreat directly is because it is too close to the big devil, as if the next moment Liu Xu's big devil will come out of the passage and beat them violently, any prince who approaches the passage will have a chilling feeling, so it is better to hide far away.

(End of chapter)