After returning to the castle, Roland was still a little embarrassed. As the saying goes, he cries with joy, but from the hero's cry, what he feels is not all joy, as if he has suppressed too many grievances, pains and criticisms in the past, and finally got an outlet.

In other words, the strength she showed was not to treat the pain as nothing, but to suppress all those negative emotions in her heart. However, this is also a normal reaction of a person, before the upheaval, the hero was just a young girl, not crushed by these tortures, still hopeful, it is extremely rare to be able to do this.

The results of the treatment were very successful, and her recovered feet were almost the same as ordinary people. Although it is difficult to bend your toes because you have not walked for too long, the fact that you can feel this part of the limb means that the nerves have been connected to the spine, and you will soon regain the ability to move freely after restorative training.

This treatment also allowed Roland to further determine the ability of the broken sword, which is to raise the "critical point" of the witch.

Every witch has its limits, such as the hummingbird - there is a limit to the size, duration, and degree of weight loss of a weight-reducing object, and even if one condition is exceeded, the mana required will increase rapidly, like a beating exponent, and the result of exceeding too much is unattainable. For example, she couldn't make a mountain as light as a feather, and she couldn't make the weight loss effect last forever, perhaps because the amount of magic it would take to do so would be astronomical.

The same is true for Nanawa, who is likely to be reborn with a severed limb far beyond the critical point of her abilities, so she can recover her blown fingers, but she can't restore her limbs, even with the help of leaves.

The Broken Sword expands this limit, turning what was previously impossible to do into something that is barely achievable, and the original way of casting a huge amount of magic has become an ability that can be cast multiple times.

He pulled out a stack of reports from a drawer and spread them out on the table—it was Wendy's test record of fusing Broken Sword with the rest of the witches.

It can be seen that the abilities of most witches have been significantly enhanced, and the exponential growth is certainly amazing, but the benefits are also great if reversed. For example, the duration of the Dawning 1 enchanted by Mystery Moon has been extended from five days to half a month, which is a valuable improvement before Neverwinter has the capacity to generate electricity on a large scale. After all, more and more factories are being built, and electricity consumption for lighting has gradually become a bottleneck in production.

There is also the state of the candle flame solidification, which can be maintained for a longer time under the increase of the broken sword, which is good for the service life and processing level of the machine tool. Without her ability, it would not be surprising that so many novices are crammed into the factory in one go, scrapping a dozen boring knives or two or three machines a day.

In addition, Zoroa, Agatha, Lucia, White Paper, and other witches who are active in the production line are all beneficiaries of Broken Sword. The industrial level of Neverwinter has climbed too fast, and many supporting systems and manpower are not in place, and it is entirely because of witches that it did not collapse, otherwise according to such a crude and rudimentary production method, it is estimated that it is not news that the work will be stopped every two days and the explosion will be every three days. Now with the Broken Sword, this part is even more stable.

Roland wrote his reasoning at the end of the report, and it was foreseeable that Broken Sword would become one of the busiest witches in Neverwinter in the future.

In the afternoon, Sean, the guard, walked into his office.

"Your Majesty, Minister of Chemical Industry Lord Kaimo wants you to go to the laboratory, and he said that you already have a clue about what you have explained. ”

"Oh?" Roland's eyes lit up, "you arrange the trip, and I'll leave immediately." ”

"Yes, Your Majesty. ”

Accompanied by a team of guards, Roland arrived at Laboratory Four.

With the establishment of the acid plant and the nitrification plant, the humble bungalow, which began as a small workshop with experimental production, became a real research site in Neverwinter. These buildings located next to the Chishui River are not only separated by walls, but also equipped with guards and logistics, and even the houses have been redecorated again, and the exterior walls are painted beige, which looks much more solemn and atmospheric.

Kemo Stoll did not greet him at the gate of the courtyard, only the deputy minister, Chamers, stood alone in front of the door, his expression slightly embarrassed. Roland had long been aware of the chief alchemist's temperament, waved his hand, and stepped straight into the room.

I saw that Kaimo was intently standing at the long table, staring at the liquid in the condenser tube dripping into the glass little by little—the liquid was as clear as amber, and when you got closer, you could smell a familiar and nostalgic breath. Around it, there are several other cups, the contents of which seem to vary from shallow to dark.

Roland couldn't help but take a deep breath.

He hadn't smelled gasoline in a long time.

Of course, it is not appropriate to call this crude product gasoline, which is far from the large-scale automobile fuel used in later generations, but has the same taste. It is not something that can be achieved in a short period of time if it is a stable energy source.

"Your Majesty," it was only then that the chief alchemist noticed him, stroked his chest and saluted, "You are right, the black water in the extreme south is indeed composed of a variety of liquids, and I have done several experiments according to the method in "Medium Chemistry", and found that they can be separated one by one by distillation. It's just ......," he said, gesturing to the glass on the table, "and if they were further separated, they would seem to be of the same composition." ”

"That's right," Roland said disapprehantly. These things are all hydrocarbons, and if Lucia were to break them down, they would all end up in the same shape, "Is there anything else to discover?"

"They can all be burned, and the more liquid is fractionated from the upper layer, the more violent it becomes, like this one—" he shook the amber glass, "and when it ignites, it's like an explosion! Your Majesty, are you going to use it to make more powerful explosives?"

Looking at the old alchemist who was full of interest, Roland couldn't help but chuckle out loud in his heart, as soon as he saw that it could burn, he thought of explosives, he already had the necessary qualities to become a real chemist.

In fact, these black waters are samples retrieved from the Endless Cape.

From the very beginning, he suspected that the never-extinguishing earth fires were caused by erupting oil wells—the so-called oil was actually a large family, and he naturally knew about it as the blood of modern industry and the strategic material that determined the direction of the world war. In fact, the difference between oil collected from the Eastern Continent and oil collected from the Western Continent is much greater than skin color, and it is no problem to say that it is a completely different liquid. Their colors range from golden and dark green to pitch black, maroon, and even transparent. Some flow like water, some are viscous, some can't be ignited directly, and some can burn easily......

In terms of composition, as long as the hydrocarbon is composed of hydrogen and carbon, it can be mixed together and packed into the oil box.

Therefore, it is not uncommon for black water to be classified as oil.

In other words, it doesn't matter if it's different from any kind of oil in the previous life, as long as it can separate the flammable oil. After all, even in the pre-travel world, people did not fully understand the source of oil, and the full range of its types. As a child, he had heard the idea that fifty years would be exhausted, only to discover later that the reserves of new fields discovered each year were growing much faster than they were used, and that all the reserves added up were far beyond the weight of the biotransformation hypothesis.