After Su You left the side gate of Huaqing Garden, he came to the main gate in a carriage, and when he got off, he also carried a basket of saltpeter.

Su You had previously thought about reporting the matter of saltpeter ice making to King Qi as soon as possible, but after the assassin's incident, Su You really couldn't guess who was behind the assassin's scenes, and in order to avoid suspicion, he could only choose to stay away from Yang Er as much as possible.

Who were the Assassins? It may be Yang Er, or it may be Maitreya in white, is it possible for the Koreans?

When Su You thought so, he was stopped by Pei Renji, who was guarding the gate of Huaqing Garden.

"General Pei, Su You has something to ask to see His Majesty......" Su You stood firm, and then put down the basket in his hand in embarrassment.

Pei Yuanqing nodded, and there were already clever little pawns who had already passed it in.

"Yokoba is here today, I don't know why?" Pei Yuanqing naturally also saw the saltpeter brought by the fat man, and asked with some vigilance and as if unintentionally.

Pei Renji's reputation for Su You has never been very good, and the reason for this is naturally because his scandal with Pei Yuyan has brought trouble to their family. But with Bae Yuanqing joining Su You's polo team, and then the polo team unexpectedly won the runner-up, Bae Renji's perception finally changed.

In fact, because Pei Yuanqing was working under Su You, Pei Renji didn't dare to be too bad with Su You.

"It's nothing, I'm here to play tricks for His Majesty today." Su You pointed to the basket on the ground, and then asked Pei Renji in a low voice, "Did yesterday's assassin have some eyebrows?" ”

"Further investigation is ongoing." Pei Renji automatically ignored Su You's preface, and just shook his head habitually about the afterword, even if there was any result, it seemed that he had no reason to talk to Su You about these things.

"Sushe, please come with me." The two were talking in a low voice, and the palace people inside had already come out to pick up people, but it was Wang Dezhi, Su You's acquaintance.

Su You nodded, then carried the basket in, and after going through a few procedures before meeting the emperor, he was brought to Yang Guang by another palace person. Su You felt the meticulousness of these people, and also realized their nervousness, it seems that the appearance of these assassins also made Yang Guang feel the crisis.

"Yokobo is coming, sit." Yang Guang saw Su You coming from outside, nodded, and his expression was as calm as ever.

"Thank you." After Su You entered the house, he found that Yu Wenshu and Yu Wenhua and the father and son were also there, although he was a little surprised, he still chose the last seat as a matter of course.

It was almost noon, and although the weather was a little hot at the moment, Yuwenshu and his son were sweating profusely. Su You made up what had happened before he came in, but when he wanted to get more information from Yu Wenhua and his face on the other side, he was glared back fiercely by the latter's eyes that seemed to be blazing.

There is very little intersection between Yu Culture and Su You, but every time they meet, they are incompatible; Of course, this may all be because of Yu Wenhua's envy and jealousy, but Su You has no intention of mending it.

"Yokona, how is the training of the polo team?" Yang Guang was obviously reluctant to let Su You know what happened between him and Yuwenshu father and son, and then started a family affair with Su You. In fact, it is obviously the most appropriate for him to bring up the topic of polo at this moment, after all, there are Yuwen Thirteen Taibao in the polo team, and these people are basically Yuwen Wenji's godsons.

Sure enough, Yu Wenshu's face slowly eased after Yang Guang talked to Su You, and he was even a little grateful to Su You for coming to the rescue at this moment, but Yu Wenhua obviously did not have Yu Wenshu's IQ.

"The polo team is training as planned, and will have a real battle against several guards in the next few days, but to fight against more guards still needs the authorization of His Majesty." Su You nodded, and when he talked about the polo team, he even danced with his eyebrows, after all, the personnel of the polo team now basically included more than thirty percent of the characters in the troubled times at the end of the Sui Dynasty, as long as they did not fight separately, it would be invincible to deal with any country's team.

"This is a trivial matter, Hengbo is on this trip today, just for this?" Yang Guang nodded, this was obviously not like Su You's usual style, after he experienced yesterday's assassination, his mood became a little suspicious.

"When Chen went out with a few friends yesterday to play, he accidentally discovered the secret of saltpeter melting into ice, and he originally thought that he would enter the Majesty after yesterday's night banquet, but he didn't expect that an assassin would happen, but fortunately, there was no difference between a day later and a day earlier. At this time, it is not difficult to turn ice into ice in the temple to reduce the heat, but it is not easy to find ice after the car drives out of Zhuo County, and this saltpeter can turn water into ice at any time. ”

Su You briefly recounted the process of discovering saltpeter to make ice during yesterday's trip, and then put forward the idea of using saltpeter in reality. Of course, Su You also knew that this saltpeter was one of the important raw materials for making gunpowder, but this point was obviously not suitable for breaking the news now.

"Melting water into ice? Shaved ice for fire? How can I say hello to you? Yang Guang heard Su You's new invention, and his excitement was overflowing, he pointed at Su You with his finger, and he was a little incoherent. Yang Guang forgot about the father-son theory with Yuwen just now, and forgot to ask Su You what "temperature" was.

"Su You can think of saltpeter ice making, it is also because of the love of His Majesty Xià to give melons half a month ago......" Su You was infected with Yang Guang's excitement, and wanted to ask for credit for Pei Yuanqingcheng and others, but he didn't know where to start, so he talked about eating watermelon that day, which was of course the cause of ice-making, but this could not be said deeply......

"Yokoba, why don't you feast my eyes on it?" Yang Guang obviously didn't want to get entangled in the matter of giving melons, so he said in a hurry.

"When the minister came back, he collected a few carts of saltpeter by the way, and he also brought a lot of them when he entered the palace." Su You nodded.

"Go get it!" Yang Guang naturally knew the rules for courtiers to enter the palace, and immediately ordered Wang Yi beside him.

Yang Guang is still a little confident in Su You's invention, at this time I heard that Su You also collected several cars, and his confidence skyrocketed a few points, Yu Wenshu temporarily reserved his opinion, and Yu Wenhua waited to see Su You's joke with a smile.

Wang Yi took the order and took two palace people to the place where Su You had placed his belongings when he entered the palace, and after a while, he walked in with a basket of saltpeter. Su You immediately asked people to find a jar and a copper plate, then poured half a basket of saltpeter into the jar, and poured half a jar of water into the jar.

"It's as simple as that?" Yang Guang stood a few feet away from the water tank, looked at the changes in the tank with great interest, and asked in disbelief.

"Su Hengbo, do you know what the crime of bullying is?" Yu Wenhua and his father and son also automatically stood beside Yang Guang at this time, and when they heard Yang Guang's questioning, they naturally took over and asked Su Youlai.

Su You nodded at Yang Guang's doubts, but did not say a word about Yu Wenhua's questioning, the mystery was about to be revealed, and he replaced the pale explanation with a smile and a silent speech. Several palace people and guards looked at Su You's unfathomable appearance, and naturally automatically guarded Yang Guang's side, as if they were afraid that some evil demon would suddenly appear.

"There's a response." Yang Guang smiled, and couldn't help but look at Su You's face. At this time, the water and saltpeter reacted violently, and the water in the barrel tumbled, and from time to time there was a popping sound.

Su You was also watching the changes in the tank, and after the water surface was stable, he floated the basin filled with half a copper basin of water on the water. After a while, under the gaze of Yang Guang and others, white ice patterns began to appear on the water surface, and then the surface of the water tank was covered with white ice, and the water in the copper basin also began to freeze......

This process lasted for about half a pillar of incense, but Yang Guang felt that time passed quickly, making him feel that it was a bit incredible for Su You to turn stones into ice between raising his hands.

"This god and ghost power too! How many truckloads of this saltpeter are there in the transverse wave? Yang Guang saw that the ice had been made, and felt that the temperature around him had dropped a lot, and his mind couldn't help but remember what Su You said before doing this experiment.

"Back to His Majesty, the several carts of saltpeter collected by the minister are about to be dedicated to His Majesty." Su You saw Yang Guang's eager eyes, and immediately expressed his selfless determination to see the wind.

"Su You, you are very good. You haven't fully grasped the use of these saltpeters today, have you? You can leave half a car to continue researching. By the way, is the saltpeter found far away?" Yang Guang was very satisfied with Su You's attitude, and reciprocated that he could let Su You leave some private goods, and asked about the location where saltpeter was found.

"It's not too far, it's only an hour to get out of town. Qi Yu Xià, there are thousands of trucks of saltpeter there, if the minister is not bad, maybe there are several places near Zhuo County that produce saltpeter. Su You nodded, saying that he would lead the way once, as for how to deal with this saltpeter, it was really not a headache for him.

"There are so many? Is there anything you can do to keep the secret of saltpeter ice for a little longer? Yang Guang nodded, if he didn't tour the north, saltpeter ice would be of no use to him at all, because the eastern capital and Chang'an have special ice storages, and some of the ice in the library has been hidden for several years.

Yuwenshu father and son looked at Su You's fossils into ice, and the shock in their hearts was needless to say, but Yu Wenhua had more thoughts, if the secret of "fossils into ice" could be used by me, maybe I could profit from it? Of course, the first step he had to do was to find a place to produce saltpeter.

While he was talking, he heard Hongluqing Yang Xuangan asking to see him outside, Yang Guang expected that the envoy of the country had arrived, so he nodded and asked the palace people to quickly lead him in.

After Yang Xuangan came in, he played, "The envoys of the two countries of Silla and Baekje learned that His Majesty was touring the north, and the special envoys came to the court together to ask to see His Majesty. ”

"Silla, Baekje? I didn't expect them to have such filial piety across the ocean. Hongluqing, you can treat them well first, and you can bring them to the dinner in the evening. When Yang Guang heard that the envoys of these two countries had arrived, he was overjoyed for a while, and he even forgot about the assassination yesterday.

Yang Xuangan nodded yes, and then Yang Guangzi was going to gather the ministers to discuss various matters related to the reception of Silla Baekje, but this obviously had nothing to do with Su You.

Su You's job now is to be a leading party, so that the people sent by Yang Guang can collect more saltpeter, of course, before he can hand over the few mines that he mined yesterday......