"City Lord Zhao, I definitely didn't talk nonsense, I just usually study some weird things, and they don't recognize my things......"

He Dan scratched his head in embarrassment, feeling embarrassed. In fact, you can see a little bit of his appearance, he looks grizzled, like a beggar.

In this case, it is normal to be suspected of being a problematic character.

"You blew up your house last time, do you think we don't know?" The guard next to him did not hesitate to expose He Dan's situation.

He Dan's expression was embarrassed, he scratched his head and said, "That was purely an accident, studying these things, they will explode at every turn...... I don't want to. ”

"City Lord Zhao, don't believe him, he must have come here to borrow the spirit crystal. After you give him the spirit crystal, he will definitely waste it quickly, and he won't make good use of it for cultivation at all. The guard shook his head beside him.

"Don't use it for cultivation, but use it to make those bows and arrows?" Zhao Yu squinted, not impatient at all.

"Yes, yes!" He Dan hurriedly said: "I don't have much interest in cultivation, so I have been focusing on this research, and I must have used all the spirit crystals assigned to refine bows and arrows." Actually, this is very helpful, I am still a little bit of an idea, just a little bit, the bow and arrow I made will be perfect, and when the time comes, it will definitely make our archers have the ability to kill beyond the level!"

He was excited, his eyes shining with excitement, as if he had succeeded.

"Don't talk about it, yours is the thing that is on the side of the door, and it is never the right way!" The guard shook his head and said, "Hurry up and leave, come here again, don't blame us for being rude!"

He Dan cried with a sad face, looking at the serious expressions of the two guards, he could only choose to turn around and leave, looking unwilling.

"It's just a little bit, it's a little bit more...... I also want to work for Heavenly Wind City!" He Dan had no choice but to find another way out.

"Wait, I didn't say let you go. Zhao Yu will speak.

He Dan turned around abruptly and stared at Zhao Yu: "Zhao, City Lord Zhao, you, are you willing to help me?"

The guards were stunned, they didn't expect Zhao Yu to call out to He Dan.

"City Lord Zhao, this must not be, this guy is the troublemaker...... No amount of spirit crystals was enough for him to waste, if he used them for cultivation, he was afraid that he would have already broken through to the spirit refining stage!" the guard dissuaded.

"Needless to say, let's look at things first, some things are not as simple as they seem. Zhao Yu looked at He Dan and said, "Do you bring finished products or anything like that, don't say much, just semi-finished products, right?"

"Yes, yes! I've already brought a semi-finished product, and it's almost successful!" He Dan took out a sharp arrow, which was inlaid with a spirit crystal, which looked simple, but in fact, the doorway inside was not small.

Because there is still a faint inscription imprint on it, this He Dan is still an inscription master!

Everyone looked at this bow and arrow up and down, didn't it look like a normal bow and arrow, and then there was a spirit crystal tied to it, what was the difficulty?

"Show me the power and shoot at that city gate, how about it?" Zhao Yu signaled.

"No problem!" He Dan nodded excitedly, then took the longbow handed by the guard, followed by the sharp arrow on it, and aimed at the city gate.

With a "bang", the sharp arrow flew quickly, but it missed.

When the people saw it, they burst out laughing, isn't it funny? Let him shoot at the city gate, but he will shoot at the city wall.

"Boom!"

At this moment, the city wall exploded, and a deafening sound came from the side, shaking everyone.

After the dust cleared, there was a big gap on it, and with such amazing power, even a powerhouse in the second or third layer of the spirit refining period might not be able to punch it out!

Now He Dan doesn't use any power, just using this thing, he can blow up the city wall without a gap, and the power is too amazing, right?

They all opened their mouths wide in shock and couldn't close them for a long time. They didn't think it had much power, but they didn't expect it to be so terrifying!

"I'm sorry, I missed ......" He Dan was embarrassed.

"Not bad, not bad. The power is very good, if it is the full version, how much more power can be increased?" Yi Tianyun touched his chin and was very satisfied with this.

Before, he could feel the terrifying power of the arrow just by looking at it, and it was not unexpected for this effect to appear.

He Dan thought about it and stretched out three fingers, then retracted back to two fingers, and said embarrassedly: "It can increase by two percent, but this is a conservative estimate, it may reach three percent, or even forty percent!"

20% to 40% ......

After hearing this, everyone gasped, wouldn't this be equivalent to an attack at the level of about three or four layers of the Spirit Refining Period? This power is too amazing, right?

"Not bad, not bad. Zhao Yu clapped his hands and said with a smile: "Then it's decided, what resources do you want, just ask the Ministry of Resources to provide you with unlimited amounts." Go ahead and make it, and the more you make, the better!"

I didn't expect him to get a treasure, this guy's research level in this area is really not low.

"Yes, City Lord Zhao!" He Dan was ecstatic, he didn't expect it to really succeed.

No one else dared to refute it, looking at He Dan's gaze was different, such a special thing, they couldn't make it at all.

They didn't think that simply tying a spirit crystal would bring about this effect. According to this statement, wouldn't it be better to throw a large piece of spirit crystal directly?

If you really do this, it will only be equivalent to losing the dog with the bun, and there will be no return.

"Come with me. Zhao Yu beckoned and motioned for him to come with him.

He Dan came upside down, followed all the way back, and everyone still looked at the damage on the other side of the city wall, a little incredulous.

He Dan rubbed his palms and was excited: "I was worried that you wouldn't approve of it before, but I didn't expect you to really support me." I've been studying this thing for a long time, and I originally wanted to take this to join other forces, but who knew that people didn't want it at all...... Fortunately, I met City Lord Zhao, City Lord Zhao is different!"

He kept patting his ass, and he was more grateful, which was simply a nostalgic talent.

"There's no need to be a sycophant, I don't eat this. Zhao Yu touched his chin and said, "Bow and arrow project, get out as soon as possible." But I'd like to have a bigger type, which is to make a cannon, what do you think?"

"Cannon?!" He Dan was startled, looked at Zhao Yu in surprise and said, "How do you know, I'm also studying this thing?"

"Oh, it seems that you have already researched a little eyebrow?" Zhao Yu's eyes lit up.

"To be honest, the cannon is basically studied, and the bow and arrow is a weakened version. He Dan became serious: "Considering that Tianfeng City has been surrounded by enemy troops several times before, I have considered making a spirit crystal cannon, but the cost is too high to study at all." For this reason, I moved on to bows and arrows, and I was the first to study cannons, but the cost was too high to say......"

This will, Zhao Yu knew that he had really picked up the treasure!