On the field, except for Qin Feng's expression, there was no change in his expression, and everyone else's eyes showed a look of shock, you must know that what is shooting now is a five-layer iron armor, but it is as fragile as paper in front of this armor-piercing arrow.

"Qin Feng, how much does it cost to keep arrows like this?" Li Shimin asked at Qin Feng.

"Your Majesty, according to the current market value, it will cost about thirty yuan for all the time." Qin Feng calculated in his heart and replied to Li Shimin.

Li Shimin was speechless after hearing this, but Qin Feng knew what Li Shimin was thinking, it was nothing more than wanting to equip the Tang Dynasty army with such arrows, but that was impossible, the consumption of arrows on a battlefield was very terrible, one was thirty wen, and after that war, the loss of arrows alone would be more than 100,000 yuan, and there would be no one country to bear.

"Your Majesty, such an armor-piercing arrow is used by a crossbow, and only a crossbow can better play the effect of this arrow, as for the archers in the army, there is no need to equip such arrows, after all, there are very few marksmen like Your Majesty, even if it is a waste to give them, the arrows they use can be replaced with pure steel arrows, even if it is a pure steel arrow, it can also shoot through two layers of armor!" Qin Feng said to Li Shimin.

Li Shimin listened to Qin Feng's words and thought about it. The idea of equipping the army with pure steel arrows lingered.

"Go back to the Tai Chi Palace!" I've finished trying the arrows, and it's time to go back to the temple and get down to business. Li Shimin walked in front, and Qin Feng and Gonggong Li followed all the way to the Taiji Palace. When he arrived at the Taiji Hall, Li Shimin sat on the couch and pointed to a book of couches and said to Qin Feng.

"Qin Feng, sit!"

"Thank you, Your Majesty!" Qin Feng was already tired of standing, and after Li Shimin finished speaking, he sat aside. Gonggong Li, who was watching, twitched directly next to him.

"You have also refined this steel for me, and the output of iron has increased greatly, I am very happy, say, what reward do you want?" Li Shimin asked Qin Feng with a smile.

"Your Majesty, don't want to reward the ministers, the ministers are brave and want a batch of steel!" Qin Feng rubbed his head and replied to Li Shimin.

"Oh? What do you want steel for? Li Shimin asked.

Qin Feng looked up at Li Shimin, Li Shimin's face was expressionless and he couldn't see anything.

"The minister has a lot of things that need to be made of steel, and the minister also promised Princess Changle to build a batch of cars for Princess Changle to do business!" Qin Feng said cautiously.

"Changle? Rickshaw? Li Shimin asked with a puzzled face, why is there still a matter of Changle here.

"A few days ago, I went to the perfume shop and met Princess Changle, and the princess asked her to help him find a business, and the minister happened to have an idea and said to Princess Changle, that is, to drive and solicit customers in Chang'an! A rickshaw is a two-wheeled car that is pulled by manpower! Qin Feng explained to Li Shimin.

"You kid, you have a lot of ideas! Changle too, isn't the monthly money I gave her enough, and she has to go out and make money on her own! Li Shimin scolded with a smile.

"Your Majesty, if the princess wants to make money, she will also share your worries!" Qin Feng excused Princess Changle.

"Forget it, I don't care about those things, I will be responsible for the steel mill, and you don't want to pick a son for me this time, Qin Huaiyu, Cheng Chumo and Li Zhen will assist you. I appoint a decree to you tomorrow. Li Shimin said solemnly.

Qin Feng looked at Li Shimin, as if he really couldn't get rid of it this time, so he could only say helplessly: "The minister takes the order!" ”

"Alright, the steel you asked for is gone! You manage the steel mill for me! Li Shimin looked like he was unloading the grind and killing the donkey.

"Thank you, Your Majesty!" Qin Feng asked happily.

"Also, I ask you, the armor-piercing arrows you brought are used in the crossbow? But as far as I know, I don't have a crossbow in my arsenal to fire armor-piercing arrows, so where did you get the crossbow? Li Shimin asked at Qin Feng.

"The crossbow is made by a craftsman!" Qin Feng said as a matter of course.

"You did it?" Li Shimin originally wanted to deceive Qin Feng, he only thought that Qin Feng only made an armor-piercing arrow, but he didn't expect this kid to get the crossbow out.

"Huh!" Qin Feng said in his heart, he was reckless! I'm afraid I'll have to hand over the crossbow again!

"Where's the crossbow?"

"The crossbow is over there in the mine now! The minister walked in a hurry this time and didn't bring it back! Qin Feng told the truth.

"Bring me back tomorrow! You kid always surprises me, and I wonder if you can't! Li Shimin said to Qin Feng.

"Your Majesty!" Qin Feng bowed and replied, now Qin Feng wants to go back quickly, and he is afraid that he will have to hand over his family funds if he stays.

"Alright, alright, go! Come over tomorrow and tell me about your crossbow! Li Shimin said.

"Retire!" Qin Feng bowed and saluted and was about to go out.

After Qin Feng left, Li Shimin laughed, Qin Feng gave him too many surprises today. Not only did steel be refined, but also crossbows and armor-piercing arrows, what these things represented, Li Shimin knew too well. No one wants to be an inactive emperor. With this sharp weapon, Li Shimin's desire to expand the territory should also be put on the agenda.

"Your Majesty, there is a sentence that the old slave doesn't know whether to ask or not!" Gonggong Li on the side said to Li Shimin.

"Say!"

"You trust the Marquis so much? The steel mill is so important, the old slave still thinks that it is safer to hand over this matter to a few old ministers! Gonggong Li said to Li Shimin.

"Are you saying that Qin Feng has objections?" Li Shimin put away his smile.

"The old slave doesn't mean this, the old slave means, from the paper mill to the iron factory, and now all the prefectures are involved in the business of the Tianci Marquis, and there are also too many resources in the hands of the Tianci Marquis." When Gonggong Li said this, he kept silent, he knew that Li Shimin knew what he meant.

Li Shimin didn't reply, stood up, walked to the door of the hall, looked at Qin Feng who was leaving farther and farther away, and said: "I would rather believe that Cheng Qian is against Qingque, but he Qin Feng will never be against him." His title was imposed on him by me, and he never asked me for anything, and I never gave him anything. What he pretends in his heart is the entire Tang Dynasty, not this throne, if he wants to rebel, I can't stop it, and no one can stop it. I never saw through him, and what was in his head was the most terrible thing! ”

Gonggong Li thought about it, indeed, Qin Feng's cleverness was the most terrifying. Putting aside the connections, if Qin Feng wants to make money, he doesn't need to work hard at all, if he has money, there are people, Qin Feng has steelmaking technology, and he can make siege equipment, and Qin Feng still has many things in his head, these are uncontrollable, it is better to let him toss under his nose.

"Your Majesty, it's the old slave who is too careful!"

"Alright, intent. Heaven gave Hou Qin Feng a meritorious role in steelmaking, giving him a thousand taels of gold, a thousand households of food, and a hundred miles of fiefdom! The head of the iron sealing factory, the second grade of the official residence. Li Shimin said.