Mu Feng knew that Wang Lang had something extremely important to go out this time, and the people of the second expedition team also chose to remain silent after they came back last time, and no matter how they asked, they did not reveal a single thing about that expedition.

Just when he was wondering if he was leaving him because of this matter, Wang Lang opened his mouth and said, "I guess you also know that I went out before for something important!" ”

Mu Feng nodded.

"Those carpenters from the Ministry of Works, bring back some weapons, and a drawing, you have to study these things clearly, especially the bed crossbow and boat diagram, and make it as soon as possible." Wang Lang said solemnly.

Mu Feng hadn't seen what he had brought back, but he didn't ask too much, as the department in charge of the technical aspect, there were requirements on it, and he could do it with all his might.

"Obey orders!" Mu Feng replied respectfully.

Wang Lang nodded and said: "The construction of the supply station cannot be stopped, the road must also be built, I will see a road to the sea within a year, the task is very arduous, but this is a major matter related to the life and death of mankind, and we must not slack off." ”

Mu Feng was shocked when he heard this, he didn't expect the matter he took over to be so serious, and hurriedly asked, "Dare to ask Your Majesty, what happened?" ”

"You don't need to ask about it, just do what I ask." Wang Lang said undoubtedly.

"Yes!"

Mu Feng replied respectfully, but his heart became even more confused.

"How has the Ministry of Industry's recent weapons been improved?" Wang Lang asked.

"Back to Your Majesty, the Ministry of Industry has recently completed the production of the miniaturization of the bed crossbow, and after testing, this weapon is more labor-saving than bows and arrows, and the power is almost the same." Mu Feng said proudly.

"Well, it's good, but when you go back, see that new bed crossbow and see what value you can refer to, and strive to make the crossbow bolts more powerful." Wang Lang said slowly.

When Mu Feng heard this, he became even more curious about the weapons he brought back.

"That's all for the time being, if you don't have enough manpower, even if you go to the household department, you must go all out to do the things I just explained." Wang Lang instructed.

"Minister, obey!" Mu Feng replied respectfully.

"Let's go down!" Wang Lang waved his hand.

"Yes!"

After Mu Feng left, Wang Lang fell into deep thought.

The threat of a different civilization is like a sharp sword hanging over its head, threatening the life of this new human nation at all times.

As a young country that has just been established and has a population of no more than 10,000 people, it is difficult to fight against an extremely developed civilization of different civilizations, but it is impossible for him to sit back and wait for death.

On that ship, he did not find any gunpowder weapons, which means that the unknown civilization did not master this technology.

If he wants to fight against an opponent of this level, he has to think about getting gunpowder out, even if he can't make a bronze cannon, even throwing a gunpowder bag with a catapult can play a role.

Nowadays, a lot of toilets have been built in the country in the summer, and a large amount of feces has been accumulated, which also provides the possibility of scraping nitrate.

Nitrate and charcoal are easy to solve, and the rest is sulfur.

Wang Lang came to the desk, took out the simple map of Xia Kingdom, and lightly clicked his fingers on the high mountain behind the deep forest.

This high mountain, he suspected, was probably a volcano, and if it was, then the problem of sulfur would be solved.

The sudden threat made his dream of being a Taiping Emperor come to naught, and for the next period of time, Wang Lang couldn't wait to make every effort to improve the comprehensive strength of the Xia Kingdom.

Send out all your armies to plunder the population and capture giant deer and ceratosaurus.

Four more expeditions were sent to the high mountain in search of sulfur, and the entire Xia Kingdom was shrouded in a tense atmosphere of impending mountain rain.

In terms of culture, Wang Lang completely gave up the idea of letting the Chinese people invent their own writing, and in addition to the hundreds of hieroglyphs created before, Wang Lang wrote all the men he remembered.

During this period, Wang Lang built a school in Yancheng, named it the Great Xia Palace, and gathered the officials of the six ministries to teach in person every two days.

At the same time, he asked the Ministry of Industry to make a large number of wooden tablets from wood chips, and began to study how to make paper.

If he wants the country to progress faster, Wang Lang must instill scientific knowledge in them in a cramming way, and only in this way can he ensure that he will not be carried away by a wave of currents in the future confrontation with foreign races.

For the officials of the six departments, Wang Lang just let them know how to write, and did not require them to write beautifully, under the crazy indoctrination, in three months, these officials, basically mastered hundreds of commonly used Chinese characters, counting hieroglyphs, the words they know have reached more than 1,000, although they are not proficient, but as long as they have a foundation, the rest of the learning will be much easier.

Teach these officials to read and write, Wang Lang immediately ordered the Ministry of Rites to organize all the boys in Yancheng, and ordered these children to go to the Great Xia School Palace every day to learn literacy.

After doing this, he locked himself in his room every day and immersed himself in compiling textbooks on natural science.

After coming to this world for so long, although he has forgotten many things, the knowledge of mathematics, physics and chemistry at the junior high school level is still no problem for him.

Stacks of animal skins were covered with dense writing, and one of the twine-bound books had two large characters of mathematics written on it.

Mathematics is the foundation of the natural sciences, and Wang Lang spends a lot of energy on it, although the natural sciences are much more difficult than words, but he would rather spend ten years teaching the Chinese people this knowledge.

If you don't want human beings to completely disappear from this world, you can't tolerate the slightest slackness.

The expedition in search of saltpeter, after four months, returned to Yancheng.

The samples they brought back completely confirmed Wang Lang's thoughts, there is no doubt that the mountain is indeed a volcano, but the expedition team did not see the existence of magma, which is undoubtedly good news, as long as it is not an active volcano, then Yancheng is safe.

With these more than a dozen catties of sulfur, Wang Lang immediately asked the Ministry of Industry to organize people to collect nitrate on the side of the manure pit, this work is extremely disgusting, no one wants to engage in this kind of work, in desperation, he had to increase the reward, which calmed down the dissatisfaction.

The progress of nitrate scraping was extremely slow, and it took more than a week to get seven or eight catties of nitrate powder.

Although it is very few, it is enough for Wang Lang to experiment.

In order to experiment with gunpowder, outside Yancheng, he ordered the Ministry of Engineering to build a secret location and sent a large number of soldiers to garrison here, and no idle people were allowed to approach.