Li Chengqian turned around and continued to look for his father, His Majesty Li Er, as for the matter of the emerging princess, it was just a small episode, and he didn't need to care too much about it at all.

The emerging princess will soon marry the eldest grandson Wuji's younger brother, Sun Xi.

This eldest grandson Xi is from the perspective of seniority, and Li Chengqian still has to be in charge of others and call him uncle.

Li Chengqian came to the outside of the Qianqiu Palace, the side hall of the Liangyi Palace, and waited for the inner attendant to report to His Majesty Li Er before entering the Qianqiu Hall under the guidance of the inner attendant.

"Son-in-law, see father!" Li Chengqian saluted His Majesty Li Er.

His Majesty Li Er was tired of dealing with military affairs in the Liangyi Palace, so he would go to the side hall to rest for a while, and His Majesty Li Er had just arrived at the Qianqiu Hall with his front foot, and Li Chengqian with his back foot asked to see him outside the hall.

"Dalang! What are you doing here! Can I help you? His Majesty Li Er asked.

"Father! The son has something to give to his father. Li Chengqian directly stated his purpose.

At this time, Li Chengqian was like a new toy, and he tried his best to let his parents know.

"Oh!" Li Er was also very curious, Li Er wanted to see what treasure his prince had to give to his father, and said with a smile: "I don't know what kind of treasure it is, and I have to worry about the prince to send it to me personally." ”

"This is it!" Li Chengqian said, took out a U-shaped iron piece from the silk bag on his waist, and placed it in front of His Majesty Li Er.

His Majesty Li Er picked up the iron piece in front of him and turned it over and over again, except for knowing that it was a strangely shaped iron piece, he didn't see any doorway.

Li Er, the head of imperialism, couldn't help frowning, and now the prince is becoming more and more disagreeable, and he actually took a few pieces of broken copper and iron and presented them to him as a treasure.

It seems that he has been idle recently, so he will be so idle, so that the plaything is demoralized to the point of madness, and he dares to take a piece of iron to fool Lao Tzu.

You said that you are planning to have a baby in the East Palace, which is better than a plaything, and you should really find something to do for him.

Seeing Li Er, who was frowning, Li Chengqian knew that Comrade Li must have misunderstood him.

Horseshoe was one of the five dynasties and ten kingdoms of the Later Jin Dynasty, by the Zhangwu Jiedu judge Gao Juzhi sent to Khotan, should be because the road is difficult to walk, the Uighurs taught the technique of nailing the horseshoe to Gao Juzhu, only from the Uighurs to the Central Plains.

The current Tang Dynasty does not have such a thing as a horseshoe, let alone a horseshoe, and it is not uncommon for Li Er not to know it.

Li Er's face became more and more ugly, seeing that Comrade Li was about to go crazy, when he was educating his son on the spot, Li Chengqian spoke.

"Father! Don't get angry, it's not too late to be angry after listening to Erchen first! It's called a horseshoe! Does my father know what this thing is for? ”

This sentence can stop Li Er, but Li Er thought about it carefully, although he didn't know what the palm was for, since it was said that the horseshoe must be related to the horse's hooves.

It's just that what is the specific relationship, Comrade Lao Li couldn't figure it out even if he wanted to break his head, so he couldn't help but be a little annoyed and said: "Then tell me, what is the function of this horseshoe?" ”

"The function of the horse's shoe is the iron piece nailed to the horse's hoof, and the horse's shoe is also called the horseshoes, which is the iron lump in front of you, father."

"War horses can prevent the horse's hooves from cracking when they are running, and they can also gallop on sand and rocky mountain roads." Li Chengqian explained.

Li Chengqian thought that next year, Li Er would have to go east again, and after having the horseshoe, the combat effectiveness of the cavalry would be enhanced, so that the expedition to Liaodong might be smoother.

Originally, Li Chengqian wanted to make stirrups and horseshoes together and dedicate them to Li Er, but he found that stirrups had appeared as early as the end of the Western Han Dynasty, but they were not applied to the military, and stirrups were widely used in the army in the Tang Dynasty, and he was not needed to invent them.

When Li Chengqian said that the horseshoe is a horseshoe, His Majesty Li Er already understood what this iron thing was for.

His Majesty Li Er's eyes lit up, as if he saw the hope of the Tang cavalry sweeping this continent in the future from the horse's palm in front of him, and even expanded the territory of the Tang Dynasty many times.

"Good! Good! Good! Cheng Qian, you have made a great contribution this time! I will reward you heavily. Li Er immediately stroked his palms and laughed, and said three good words in a row, which is enough to prove how happy Li Er's mood is at this moment.

Now that he has this horseshoe, he wants to see who is still the opponent of the Tang Dynasty, how can Xue Yantuo, Gao Gooli and others be the opponents of the Tang Dynasty, if anyone dares to disobey, they will definitely not be able to eat and walk around.

"Share your father's worries! It is the duty of the son, and the son does not want any reward. Li Chengqian said.

Now he is the crown prince of the Tang Dynasty, the future emperor, and his father issued an edict a few years ago so that he can use the things in the treasury at will without moderation, where does he need any rewards now.

"Since I said that I want to reward you, naturally I can't break my word, as the so-called king has no jokes! Rong Zhen thinks about it, what should I reward you? Li Er said that, and fell directly into deep thought.

Li Chengqian was not at all curious about what Li Er would give him, it was nothing more than some playthings such as pearl agate.

"So be it! I will reward you with some beauties, lest you lack vitality in the East Palace. Li Erdao.

"Thank you, Father!" Li Chengqian almost spurted out a mouthful of old blood after hearing this, and wanted to refuse, but when he met Li Er's eyes, Li Chengqian finally swallowed back the words that came to his mouth.

"That's it! If you don't have anything else to do, go back first! Li Erdao, who was still elated just now, seemed to be a different person at this time.

Li Chengqian saw a trace of sorrow between Li Ermeiyu and asked, "What's wrong with my father?" I don't know why I'm worried! It's better to talk to Erchen, maybe Erchen can relieve his father's worries! ”

"It's not because of Xin'er's marriage, I just received a report from the border gate, Xue Yantuo's True Pearl Khan Yinan personally escorted more than 100,000 livestock, and he was on his way to Lingzhou."

"I thought that Yi Nan would be afraid to come because I asked him to go to Lingzhou in person, and I took the opportunity to withdraw from the marriage, who knew that he really came! I don't even know what to do now!" Li Er said.

Li Er didn't plan to make peace with Xue Yantuo, but now that he has the horseshoe that Li Chengqian gave him, Li Er's mind has also begun to liven up, but there is no legitimate reason, and he is not good at doing anything to Xue Yantuo who is attached to the Tang Dynasty, otherwise everyone in other vassal countries will not be in danger!

This is not conducive to the other ethnic groups around the Tang Dynasty's rule, nor is it conducive to the future development of the Tang Dynasty, and it is even more inconsistent with Confucian thought.

Li Chengqian thought it was a big deal, but it turned out to be a small matter, it was a small matter for Li Chengqian, but it was a big deal for Li Er, if there was no legitimate reason, he would withdraw from the marriage like this, even if he was the emperor, it would not work, this is a matter of a country's face and reputation.

As the king of a country, how can he easily break his word and gain weight.