Not long after Ye Feiyan and Jun Lan returned to Jun Lan's house, Yuan Yicheng hurried over.

"The princess came to me, I don't know what to order?" Yuan Yicheng was no longer as polite as before, and when he saw Ye Feiyan, he said directly.

"Wait, I'll make the drawings and show you the new things I need to build." Ye Feiyan was busy drawing drawings on the paper with her right hand, and motioned for Yuan Yicheng to sit down with her left hand.

Yuan Yicheng looked at Jun Lan who was sitting beside Ye Feiyan, and finally chose to stand, although the princess had told him to get along with his friends, but Jun Lan was the prince of Tianjing after all, and it was better to be careful before figuring out his true attitude towards the princess.

Jun Lan glanced at Yuan Yicheng with the corner of his eye, and saw that he did not sit down according to Ye Feiyan's gestures, and his heart was a little calm, if this Yuan Gongzi did not measure himself, then he would find a way to make him disappear, and there was no shortage of people with superb skills in Tianjingguo.

Ye Feiyan quickly finished a sketch, raised her head, and saw that Yuan Yicheng was still standing, and understood that he was still worried about her and Junlan's identity, so she stood up and handed him the drawing.

"Look, this thing is very simple, but the craftsmanship is demanding, I wonder if you can do it with your skills?"

Yuan Yicheng looked at the drawings, which seemed to be a vest, but this vest was made of iron and cowhide, and what he needed to complete was the iron part.

The iron sheet required is very thin, but the toughness is excellent, and it is divided into two pieces in the front and one in the back, and the connecting part under the armpits is made of strips cut from cowhide.

Yuan Yicheng looked at the basic structure of this vest and understood its function, but what puzzled him was that at the heart position, the iron sheet had to make a round groove like a palm.

"Princess, this thing shouldn't be difficult to build, but may I ask, what is the use of the grooves in this part?" Yuan Yicheng couldn't help but ask curiously.

Jun Lan, who has been sitting beside Ye Feiyan, is also full of curiosity about that groove, the thing on the picture should be used for self-defense, similar to armor, but shouldn't the heart part be more protected? Why design a groove to go into

However, he didn't ask, because he knew that Ye Feiyan would definitely explain it clearly when he told Chang Qingshi, and he was not in a hurry to disturb Ye Feiyan's train of thought at this time.

"You should already understand the purpose of this thing, as for the purpose of the groove here, I will explain it to you slowly in the future."

Ye Feiyan paused for a moment, and then continued: "This kind of thing needs to be built as soon as possible, and the craftsmanship must meet the requirements, otherwise the effect will be greatly reduced." ”

Yuan Yicheng put away the drawings, "Princess, I'll go and build it, and it should be completed early tomorrow morning." It's very easy to build, and the most important thing is the craftsmanship, I try to make the iron sheet as easy to deform as possible, so that the wearer doesn't feel clumsy. ”

Li Xue'er nodded, "You build this thing first, and the other things can be slowed down for a while." ”

Yuan Yicheng nodded, "I understand, I will try to complete it in the time you need." ”

Yuan Yicheng took the drawings and hurriedly left Junlan's house.

"Yan'er, are you going to use that thing to protect Erya?" Jun Lan was quite embarrassed in his heart, if the second girl did not die, then King Sheng would not die.

"Yes and no, I want to use it to achieve two effects, one is to protect Erya, and the other is to make the assassin think she is dead."

Jun Lan's eyes lit up instantly, and a smile appeared on his lips, the purpose of that groove should be here.