I don't know what's going on, but the laundry detergent is spreading fast.

Even before Li Er's afternoon deliberations were over, he heard an official from the Ministry of Household Affairs mention this thing.

It turned out that after Cui Zhengyuan went home, he first took care of some of his clothes, and then suddenly remembered that there was a dirty silk drawing in the warehouse of Sinong Temple, and hurriedly took it out as a clothes scrub.

The dirt, which they couldn't do before, began to dissipate in the warm water in an instant, revealing the true face of the drawings.

At that time, the officials who rushed to the household department to do the work were stunned, so they came back with the drawings and let everyone know about it.

"Needless to say, it must be a good thing made by Chen Chu again." Li Er's heart itched, there was some dirt on his dragon robe that couldn't be removed, but it was impossible to re-customize.

After all, the production of dragon robes is extremely labor-intensive and material-intensive, and people in this era are very interested in appearance and demeanor, who can bear to have such a pickled writing on the clothes they often wear?

At this time, the drawings were placed in the center of the table, and a group of people came over, looking at the contents on it, and one by one showed a solemn expression.

Li Xiaogong, the king of Hejian County, said in a low voice: "It is the key blueprint of the Qin Dynasty's crossbow!" With it, we Datang can create a big killer weapon that can be used in horse-drawn carriages with a range of more than 300 steps! ”

Three hundred steps! Everyone gasped in unison, their pupils constricted, and they were inexplicably shocked.

Li Er's heart twitched, how many people have handled such an important thing? And there are quite a few ministers gathered around this time alone...... Sloppy!

Who knew that Cui Zhengyuan's reckless man had this drawing brought over like this, shouldn't it have been reported to him secretly?

A group of ministers were also shocked in their hearts, and a chill rose behind them.

Fortunately, Li Xiaogong's words later relieved everyone: "However, the craftsmanship of this crossbow, with the current level of our Datang, is categorically impossible to make, Your Majesty does not have to worry." ”

Li Er was slightly stunned, what kind of thing is this, what can be done in the Qin Dynasty, but now it can't be done a thousand years later?

"Your Majesty, please look at the steel spring of this crossbow, because the range is extremely long, the power is great, in addition to the string force, the role of the spring is greater, and such a forging technology and building skills have long been lost."

Li Er understood at this time, and he was relieved in his heart, if he said this, even if outsiders fully grasped this drawing, it would be useless.

The people who escaped the catastrophe dispersed one after another, and Li Er left some of the old cronies of the Tang Dynasty to continue to discuss, wanting to make this thing called the Black Windmill Crossbow.

This thing can be used on the carriage, and when the time comes, when it encounters the Turks and the Tibetan barbarians, they will directly fire ten thousand arrows, Li Er thinks hatefully, he will definitely be able to kill them, and he will kill them out of sight.

Everyone was worried, they didn't understand this at all, and even the Ministry of Industry said that there was nothing they could do, they had calculated, with the current forging skills of Datang, as soon as the black windmill crossbow was wound, the spring would collapse, let alone use it.

"Forget it, I don't want to, let's study it slowly in the future."

Li Er shook his head, the craftsmen all said that it was impossible, so it was a fart, so let's go out of the imperial city and walk around.

This time, in addition to the eldest grandson Wuji, he also brought Fang Xuanling and Qin Shubao, both of whom were sick, and their physical condition did not look very good.

Li Er thought about seeing if he could mix a meal with Chen Chu to make the two of them better.

So at dusk, when Chen Chu heard the reason Li Er said, he was directly shocked.

It turns out that eating food can get better when you are sick, but fortunately you are not a medical student, otherwise your teacher would have been able to bring you up and beat you, is there a trace of logic in this?

It's terrible to be uneducated, when will Lao Li be as knowledgeable and calm as a cultured person?

"Ding, the system detects your complaining behavior, the spit value is +150, and a box of painkillers will be rewarded, and the place will be in the clothes."

Chen Chu reached out and touched a medicine packaging box from his arms, opened it and saw that there were a total of two versions of twenty-four capsules.

Analgesic? Although Chen Chu said that he was healthy and couldn't use it, he didn't have to think about it to know that the world needed it was absolutely indispensable!

People will not not get sick because the medical conditions are not good, many diseases such as pain can torture people to death, and it is definitely a great blessing for patients to be able to relieve pain.

Coincidentally, as soon as these two surnamed Huang and surnamed Qin came, they got painkillers, it seems that they are blessed, seeing that the two of them are not in good health, and they frown slightly from time to time, and eighty percent of their illnesses are painful.

As for Li Er's introduction to Chen Chu of Fang Xuanling's surname Huang, he was afraid that Chen Chu would suspect this relatively rare surname.

"What's this?" Li Er did not have any trace of the emperor's reserve and calmness.

As long as Chen Chu takes out what he hasn't seen, he has to ask, anyway, he is not ashamed, after all, he still has this kind of mind.

"What is the illness of you two, do you have any pain in your body?" Chen Chu asked the two.

Qin Shubao is a military general, so he naturally won't say it if he has pain, he naturally shakes his head, and Fang Xuanling can't do it as a literati: "Knee pain, headache, it's all ** disease, the root of the disease fell when he was young, although it is not very violent, but it hurts for a long time, and it is very tormenting." ”

Chen Chu imagined it, and he could also roughly understand the other party's feelings.

The short-term severe pain is terrible, and the long-term dull pain is probably even more terrifying, and the conditions of this Datang are not good, there is no Simmons, no massage chair, no special medicine, it is difficult for this big brother.

"Well, you can take these two capsules with warm water and see if it works."

Chen Chu asked Yuzhu to bring two cups of warm water and let the two of them take it.

Li Er and Eldest Sun Wuji were surprised, although they didn't know what this thing was, they guessed that it should be some kind of drug...... Damn, the packaging of this drug is too high, right?

Taiyi practiced medicine just with a pack of paper, this pill is so beautiful, it can even reflect light under the light, and it is specially made such a beautiful box......

Thanks to Chen Chu, he didn't know what the two of them thought, otherwise the spit value would have risen again.

The two of them naturally did so, and after a few breaths, Fang Xuanling suddenly stood up on the table in shock.

"What's the matter, my knees and head are warm, and the dull pain that has always been there seems to be gone!"

Results so fast? It seems that the resistance of the Tang people's body is zero, Chen Chu thought.

Before Li Er and the others were shocked, Qin Shubao also took a light breath of cold air and looked at the remaining pills on the table incredulously.

"I've had a lot less pain in my body...... Lord Chen, what kind of miracle medicine is this? I've never heard of it! ”

Hearing that even Qin Shubao said this, Li Er and the eldest grandson Wuji were pleasantly surprised.

Li Er was originally a military general, and he was also injured when he fought the world, but he fell into a lot less disease than Qin Shubao, but sometimes, especially when it rained in spring and autumn, his body would ache faintly, and sometimes he would even be in pain and couldn't stand it.

The pain on Shubao's body must be much more serious than his own, and he doesn't know how many times he was seriously injured alone.

But just one pill can suppress the pain, how miraculous it is!

"Chen Chu, how long can this medicine last?" Li Er hurriedly asked.

He didn't even know when his heart was beating so hard that it almost jumped out of his throat.

Chen Chu glanced at the manual: "About twelve hours, that is, half a day." ”