Cui Hongsheng has a majestic face and a tall stature, although he is over fifty years old, he can still make people see his extraordinaryness at a glance; Standing behind him was Xue Shixiong, the county prince, and behind Xue Shixiong was the eighteen horsemen of Yanyun that Su You had seen a long time ago.

"Welcome to Qi County, long live my emperor, long live long live." Cui Hongdu didn't say anything superfluous, and with his instructions, the sound of the neat mountain was earth-shattering.

"You've worked hard, flat! Lead the way, into the city! Yang Guang stood on the carriage, waved his hand to the kneeling soldiers, and then returned to the car, while Cui Hongsheng and Xue Shixiong, as pioneers, immediately walked ahead of Yang Guang's car.

"Brother Xue. Su You officially invited the five of you brothers to join the national polo team. Su You saw the opportunity and quickly conveyed the invitation to Xue Wanche, who had mixed feelings after receiving Su You's letter of appointment, since they lost to Su You's team on the bank of the Tongji Canal last time, they had stepped up their training in order to avenge their revenge, but they didn't expect to wait for Su You's invitation.

Unexpectedly, Su You remembered them after the battle that day, and asked them to be his teammates, could it be that they found the wrong person?

"Transverse waves, why?" Xue Wanche said with some disbelief.

"I know that you are still haunted by the game that day, and I believe that you all have the heart to serve the country; Why don't we put aside our personal grievances and fight for the country first? We have a common enemy, and that is the Hu people who are immortal in the ambition of the wolves outside the gate. Su You nodded affirmatively, of course he couldn't talk to Xue Wanche about patriotic feats or anything, but the bullying of foreign races, the people stationed at the border could empathize with it the most.

"Give me a little time." Xue Wanche made an apologetic wry smile and shook his head, his personality was not like Pei Yuanqing or Cheng Yanjin.

Time crawls forward like ants, and people are becoming more and more unbearable, but fortunately, there is still a large amount of ice stored in the ice warehouses of the major families in Qi County, so the lives of Yang Guang and Su You and others are much more comfortable than on the road.

When the Five Tigers of Qi County were completely integrated into the national polo team, Yang Guang had been in Zhuo County for nearly ten days. According to the arrangement of the northern tour, Yang Guanghui will accept visits from various departments in eastern Liaoning in the next half month, and by the way, he will also wait for the opening of the straight road.

Seven days ago, when Yang Guang climbed the Great Wall and went to Tongzhou, the news of his visit to Zhuo County had spread throughout the Liaodong tribes, and the leaders of the Khitan, Jurchen, Baishan, Heishui, Murowei, Bohai, Limo and other tribes had heard the wind and said that they would come to Zhuojun to bow to the Great Sui Emperor.

In the past few days, the national polo team has officially established the leadership of Su You and Li Jing because of the addition of the Zhuojun Five Tigers, and the two of them have officially gotten rid of the identity of half players and half coaches, and the team's confrontation has increased from thirteen to fifteen, and Su You has enough reason to believe that the first real twenty-man confrontation this afternoon will not disappoint him.

Because of this, Su You deliberately gave the players half a day off so that everyone could go all out to meet the first real challenge in the afternoon.

Today's weather is good, the wind is beautiful, Su You doesn't have to train in the morning, so he thought of making ice. Su You took Pei Yuanqing, Cheng Yanjin and four or five other teammates and a dozen or so guards to the southwest for a while, but the sun quickly wore down Su You's patience, making him want to revisit the old place as soon as possible.

"Where are we going?" Pei Yuanqing looked at Su You's clear purpose, and asked with some fuss.

"Didn't you talk about chilled cold melons a few days ago? I've read a book about the geography of Zhuojun in the past few days, and I already have the answer to what you thought that day. Su You answered Pei Yuanqing's doubts, but he panicked, reading a book or something is pure nonsense.

"My wish has come true, isn't the cold melon we ate these days just chilled?" Pei Yuanqing felt a little unbelievable about Su You's inexplicable behavior, but he was a master of art and bold, although he knew that the whole trip to bite Jin and Liu Wuzhou were Su You's people, he didn't take it to heart.

"Out of Zhuo County? We still have a long way to go north, and from the beginning of July to the end of August is a drought in the north, and what I am looking for now is saltpeter that can make ice. Su You nodded, and everyone suddenly realized that everyone had already heard of Su You's strange invention, so they had no doubts about what he said, except for Cheng Yanjin.

"Sir, I remember last time you failed to make ice." Cheng Yanjin carefully reminded Su You, he thought that Su You had forgotten about the last time, but in fact, Su You had just talked to Pei Yuanqing about it.

"Last time, you didn't find the right materials, don't say anything, just wait and watch the show." Su You smiled dumbly, miscanthus and saltpeter couldn't be distinguished in appearance, fortunately, the matter of making ice last time was only spread by a small range of people, if he was still doing things as high-profile as usual, I was afraid that he would have become the laughing stock of others at this moment.

"Are there many other types of saltpeter?" Cheng asked sneeringly.

For a person like him who didn't understand Chinese medicine or what chemistry was, Su You didn't explain more, but just nodded silently.

In fact, Su You was the only one of the dozen or so people in this line who cared about ice making, so they quickly talked about polo training. Everyone saw the progress of Liu Wuzhou and Cheng Yanjin, and praised them at this time; As for Pei Yuanqing and Laichen, with their ball skills and relationship with Su You, it was a sure thing to want to enter the twenty-man squad, so the two of them didn't cause any topics.

After some galloping and a lot of time of searching, Su You finally found the cave in his memory under a stone mountain, - the cave has a radius of 100 zhang and a height of dozens of zhang, although there is only one entrance three or four zhang wide, but there are several large holes on the top of the cave that let in the light, so the cave does not look too dark.

"Wow, it's so cool!" Cheng Yanjin couldn't help but exclaim when he entered the cave to feel the cool breeze blowing on his face, and with his exclamation, what came into everyone's ears was the endless sound of breaking the sky.

"What? Bird? Except for Su You, the people behind him all clenched their weapons at the same time, but they were wondering in their hearts what this unknown enemy was.

"Don't panic, it's just a bat!" Su You saw everyone's reaction and immediately explained, and before his voice fell, he saw a large group of black bats flying over everyone's heads.

Although there were many bats, they did not stop for a second, and everyone's feelings relaxed from the tension just now.

"Wow, that's beautiful!" This was Cheng Bitingjin's second cheer, and it was also the voice of everyone at this moment, because they immediately saw the strange stalactites in the cave, most of the thousands of white stalactites had been shaped, and dozens or hundreds of them formed strange patterns; Some stalactites are still dripping and grayish in color, like ice hanging on a snowy day......

"Look at the ground." Su You saw everyone cheering in unison, and he couldn't bear to break their good mood when he saw the beautiful scenery, but he still couldn't stand their actions of ignoring him, so he pointed to the big black thing in the middle of the hole and said.

"That's?" Looking at the things in the cave, it seems that he has already guessed what it is.

"Bat droppings. Bats may have made their home here for more than 10,000 years. Su You laughed mischievously, and then picked up a stone on the ground and threw it at the cave wall.

"Sir, I'll come." Cheng Yanjin saw that Su You was smashing hard, and then raised the plate axe in his hand.

The sound of "clang" was endless, as the startled bats on the top of the cave continued to fly towards the entrance of the cave, and there were more gravel on the ground, Su You commanded a guard to bring a wooden bucket, and then put more than ten fist-sized stones into the bucket, and put a water bag on the stone, and then began to add two bags of water to the barrel.

When everyone heard that Su You was going to make ice, they were very interested, but they were still a little disappointed when they saw his current actions, if making ice was so simple, then who wouldn't make it?

However, everyone still gave enough respect to Su You's official position and the leadership of the team, and at this time, they also watched Su You with the mentality of watching the excitement.

After a few breaths, I saw that the water and stones in the barrel reacted violently, and from time to time there was a sound of explosion. Seeing the stone and water reacting so violently, everyone opened their mouths in surprise for a moment, and at this time they could all stuff two duck eggs in their mouths.

Su You saw everyone's expressions at this moment, but he closed the lid of the bucket, - the most exciting moment is always when the results come out.

"That's it?" Although Lai Cheng has always been pessimistic, he will not doubt what Su You did.

Su You nodded, and everyone didn't know what to say for a while, but you look at me, I look at yours, and they were overjoyed for a while.

"Today, you can find saltpeter to make ice here, and you don't have to be afraid of the heat anymore during your northern tour, if your majesty has a reward, Su You will definitely not treat you badly." In order to win over everyone, Su You generously announced his decision, but having said that, he began to think about making ice cream and the like out of saltpeter.

"Sir mighty! Mr. domineering! Everyone cheered, and they felt that today's trip was really full of joy, not to mention the reward that Su You said, just the ability to make ice on this hot day can make people worship for half a lifetime, but what they want to see more at this moment may be the changes in the bucket.

Su You did not disappoint them, and quickly opened the lid of the wooden barrel, when the wooden lid was opened, everyone first felt a burst of coolness, and then found that there was already a lot of ice slag on the lid, and the water that was still surrounding the stone in the wooden barrel just now had turned into an ice-water mixture, and the water bag on the stone had swelled.

Su You took out the water bag from the bucket, took out his saber and swiped it slightly, and saw a large lump of ice fall to the ground, and after the ice fell to the ground, it rolled towards the low ground.

"It worked!" Su You said softly.

"It's really ice!" One of the guards closest to the ice cube carefully picked it up, felt its coldness and hardness, and then whispered a sentence before passing it on to the next person......

"Sir, what a man of God!" Suddenly, such a thought flashed in the hearts of everyone present at the same time, and then Su You was directly included in the list of "most admired".

"Let's collect some more saltpeter and go back, so that His Majesty's big tent can enter autumn in advance." Su You nodded, and then ordered.

Everyone felt the magic of ice-making, and thought that they could participate in the major event of changing the seasons for His Majesty's big tent.