"Although it is the most ideal to follow this method, if we continue like this, we will develop habits and dependence on this method..." Liu Tao shook his head. This method is indeed very convenient.

But this convenient method is for the "subject". If he only plans to play this trick, then it would be a "loyal minister of the Han Dynasty" obediently, and there is no need to re-establish the rules.

If possible, he hopes not to use this method to the greatest extent, so as not to trap himself in the end.

He paused, looked at the bucket of ice, and continued, "Besides, the size of this bucket will consume about four taels of saltpeter. The ice produced is only enough for about five people, and it will be used for one or two quarters of an hour... The entire army has 20,000 people, and not much saltpeter is enough."

"This is also..." Lu Yan nodded, indeed, never considering the cost issue.

The main reason is the method of condensed water into ice, which is really too surprising. This feels like the method of seizing the creation of heaven and earth. The moment he saw it, he was thinking. If he used it properly, he might be able to give Liu Tao a wave of reputation.

The key is to help his father. It is strange that Zuo Feng came to inspect. After all, Huangfu Song and Zhu Jun did not look like the yellow gate. This time Zuo Feng was sent away, and it is hard to say whether someone would come to inspect the next time.

Only by defeating Guangzong is the key to ultimately solving the problem.

"In fact, there is a better solution..." Liu Tao pointed to the bucket of ice, "Isn't it better to leave it to the teacher to judge?"

"Ha, I haven't considered this issue." Lu Yan suddenly realized when he heard this.

As the saying goes, a leaf is blocking his eyes. Lu Yan set out on Liu Tao's side, but he ignores Lu Zhi's ability and his identity.

A few minutes later, the ice bucket was delivered to Lu Zhi. The latter looked at the bucket of ice and looked at the two of them in disbelief.

He could see that this bucket of ice should not have been packed outside and brought over, otherwise it would have melted. The key is that they are surrounding Guangzong City at this moment, and there are wilderness around them, where do the ice cubes come from?

"Where... it came from..." Lu Zhi couldn't speak. At this moment, he was full of two sentences: "I don't say anything about strange powers and confusing gods" and "respect ghosts and gods and stay away from them."

"It was made by adding some saltpeter to the water." Liu Tao came forward, "I happened to hear a sorcerer say by chance that the weather was too hot recently and I happened to have time, so I asked Canshan to help bring some saltpeter back and try it."

"Can the water condense into ice by adding saltpeter?" Lu Zhi was stunned, but he was a little calmer after all. It doesn't matter, as long as it is not related to gods and ghosts.

"Fine observations, 4 or even 3 liang of saltpeter can almost condense this bucket of water into ice. And dry the water, or put it in a pot and cook it, then you can still get saltpeter, which means it can be reused." Liu Tao replied.

"But saltpeter is used less after all. The soldiers I sent only found half a kilogram in Quzhou County." Lu Yan stepped forward, "Of course, if you look carefully, you may find more..."

If a county is only half a pound, or even one pound, the effect will not be great. Lu Zhi looked at the bucket of ice and felt a little regretful.

If he could have thousands of barrels of ice, he could immediately ask the troops to launch an attack. Not to mention anything else, in such a hot day, he could maintain his combat power for at least half an hour.

"Slow down..." Lu Zhi thought for a while, "If you don't need to freeze, you just need to reduce the water temperature to the point where it is about to freeze. How much saltpeter is needed?"

"About six cents, I think it's actually enough." Liu Tao thought about it, "How much does it take, how much saltpeter and water are needed to reduce the temperature to a certain extent. This can only be explored a little bit."

"The last question." Lu Zhi looked at the bucket of ice, "Can you drink the saltpeter water put in it?"

"I haven't asked the doctor, but it should be fine, but the taste is slightly bitter and not suitable for drinking in large quantities." Liu Tao replied. In his opinion, the doctor probably didn't know whether this thing can be drunk and how many problems there are.

"Then let's go and ask the doctor. I need to know the accurate information. There can be no sloppy." Lu Zhi ordered that anyone familiar with him could hear it. His tone was a little excited.

"My teacher, I don't plan to let the soldiers carry a water bag..." Liu Tao probably knew Lu Zhi's plan.

"If it is ice water, it can last for at least a period of time, and the key is that it will not frostbite the soldiers. Compared to ice, ice water is more useful. Besides, if you don't attack, the next yellow gate may be coming." Lu Zhi sighed.

Sure enough, Lu Zhi was also worried about this issue. Although Zuo Feng had only been here for a day and a night, he still noticed some of the information he should have revealed. His Majesty, he was indeed a little sad about the food and supplies spent by the treasury.

At this time, Lu Zhi remembered that His Majesty the Great Han Dynasty seemed to value money more strongly than he thought.

The key is that the siege equipment has been built, but it has not been put into use due to weather problems.

"Mr...." Liu Tao immediately expressed his opinion, "If it is a general attack, can my troops be allowed to participate in the battle of the city? Although I know that this has some impact on the distribution of military merits, the key is to capture Guangzong as soon as possible."

"Indeed, at critical moments, we can't be too particular." Lu Zhi hesitated for a moment and finally nodded in agreement.

Liu Tao and the others made great achievements along the way. If they fought the Guangzong or took the main contribution, the following lieutenant would probably have some opinions.

The Hanting was very strict with the promotion of the border army, and it was difficult for those who did not make military achievements. However, in recent decades, the captains of the north and south armies have gradually become gilded places for children of aristocratic families. It is not possible to be able to survive in the officialdom and eat enough to ignore others.

Liu Tao and Lu Yan left, and Lu Zhi had already ordered the soldiers to dig a pond next to the Qinghe River. This is obviously faster than wooden barrels. The disadvantages are not easy to recycle saltpeter, but as long as Guangzong can be pacified in one battle, it will be no big problem.

"I feel that this time, I feel a little guilty about Deran..." Lu Zhi sighed. When he accepted them as his disciples, he mainly came to study with his fellow villagers. There was no way, so he could only accept them.

Unexpectedly, a few years later, Liu Tao could grow to this point. It is really unpredictable.

"I didn't expect it to be Bingshui..." Lu Yan felt that he was too stupid before, and Bingshui didn't expect it at all.

"Indeed, if ice is carried close to you, it will cause frostbite in the skin, but it is not as good as ice water. However, in this hot day, ice water will probably fail soon. The soldiers have to adapt to this weather again. At this time, they will feel that the weather is hotter than before." Liu Tao shook his head. He actually thought about the issue of ice water.

Just like when I entered the air-conditioned room outside for a while and then went out, the temperature outside had not changed, but the body feels that the temperature outside seemed to have increased several degrees...

I think it would be even harder for soldiers at that time.
Chapter completed!