In fact, poppy was available in the late Tang Dynasty. It is recorded in Tang Dynasty poetry, and poppy seeds have also been unearthed in archaeology, mainly on the Silk Road west of Chang'an. By the ninth century, there were records of people planting in Hanzhong, Chengdu and other places.

During the Song Dynasty, opium has been recorded in many places, such as Zhou Zizhi wrote "Planting Opium Poppy" and "Poppy Will Become", but only used opium as a tonic to treat diseases.

However, the extraction of opium from opium poppy is a technology that has only been available since the Ming Dynasty.

The medicinal value of opium has been recorded in many medical books since the Song Dynasty, and it is regarded as a good medicine for treating dysentery and other diseases.

During the Yuan Dynasty, Chinese medicine had a preliminary understanding of the huge side effects of opium poppy and recommended that it be used with caution. For example, the famous doctor Zhu Zhenheng pointed out: "Today's people are tired and coughing, and they use corn husks to stop their work; For those who drain from damp heat, use it to stop astringency. Although its work to stop the disease is urgent, killing people is like a sword, and it is advisable to abstain from it. However, the world did not remember Zhu's advice, and by the Yuan Dynasty, some people had already begun to consume opium.

The opium consumed by the people of the Yuan Dynasty was not made in China itself, but plundered from the wars to conquer India and other places. Opium, as a trophy of war, was quite popular at the time.

It was only during the Ming Dynasty that China gradually understood the production and manufacture of opium. Li Shizhen's "Compendium of Materia Medica" recorded the method of harvesting raw opium at that time, according to the "Ming Huidian" records, Siam, Java, Punggarai and other places in Southeast Asia produced opium, and from time to time as a "tribute" medicinal materials contributed to the Ming emperor, such as Thailand, that is, a tribute of 300 catties of opium. Until the Chenghua period, opium imports were quite limited, so opium was expensive on the market, comparable to gold.

As a later generation, Zhang Nan can be said to have a deep hatred for this thing, as far as the country is concerned, the large import of opium has caused the annual outflow of silver from China to 6 million taels, causing a serious silver shortage in China, resulting in the cheapness of silver, inflation, and the exhaustion of the Qing court's finances and the emptiness of the treasury. The opium trade seriously corrupted social morals and destroyed social productivity, resulting in a depression and decline of industry and commerce in the southeastern coastal areas.

As far as people are concerned, the late Qing Dynasty was from the princes and ministers to the common people, and the phenomenon of smoking can be said to be nationwide, and it has greatly reduced the physique of the Chinese people, and even some people in the army have smoked it, which has caused the overall combat effectiveness of the army to be low, the body is weak, and it can even be said that they have no combat ability.

So for this kind of thing, Zhang Nan can be said to hate deeply, there is nothing more terrible than drugs, and he may be able to fight to the last soldier, even if he is defeated, as long as he has a life, he will be left in the green mountains without worrying about no firewood.

But this kind of thing is slowly destroying the whole country, like a thousand-mile embankment collapsed in an anthill, and it doesn't feel like a big problem at first, but when you come back to your senses, the damage caused is already irreversible.

"If the emperor has to make an analogy with this thing, it will be similar to Wushisan, but the harm of this is much clearer than that of Wushisan." Zhang Nan thought about it and helped Comrade Li Er make an analogy.

Although the addiction of Wushisan is relatively low, it can be regarded as a non-mainstream drug, and Wushisan will be very happy after smoking. When it is the most toxic, it will think a lot and cry. Ruan Ji is that after absorbing five stones, he wrote eighty-seven poems overnight.

In addition to the fact that Wushisan was only sucked by nobles, it caused a wrong trend, and there was a more important reason for smoking Wushisan in ancient China was its aphrodisiac effect.

Sun Simiao once said: "There are five stones of greedy bait in order to seek the joy of the house."

So it can be seen that this thing is a combination of drug addiction and sex addiction, which is why it is so sought after by the upper class.

But opium is different, not only is it highly addictive, but it is also relatively inexpensive, after all, as long as there is a large number of opium poppies, there will be a large amount of opium.

Li Er didn't speak after hearing Zhang Nan say Wushi San, Li Er also smoked this thing before, and the addiction was not small, after all, the combat power of this thing soared exponentially after sucking, but since he knew that this thing was extremely harmful to the body, Comrade Li Er stopped touching it.

After all, compared with momentary pleasures, Comrade Li Er still likes his life more.

"I see, I'll strictly restrict this thing when the time comes." Li Er frowned.

"It's best to add this thing to "Tang Law"." Zhang Nan said.

Zhang Nan knows that if drug abuse is out of the way, it is not something that ordinary people can control, only the law can be controlled, and even if there is a law, if they are contaminated with this thing, there will still be many people who are willing to take risks.

"The minister thinks that not only should this thing be added to the "Tang Law", but also a heavy punishment, if someone is found to be smoking, he will be forced to detoxify, and he will be punished, and if someone specifically provides these things for smoking, he will be clicked directly." Zhang Nan said.

"Wouldn't that be too harsh?" Eldest Sun Wuji frowned and said, after all, in Eldest Sun Wuji's opinion, even if it is sucking Wushi San, it is not a big deal, why is this thing so serious?

"Harsh? It's not harsh at all, if it's not restricted, Lord Changsun will wait to see the big and small cigarette shops in Chang'an City. Zhang Nan said with a sneer.

After all, in the era of opium smoking in later generations, there were many big tobacco houses, and the empty eyes, numb expressions and thin bodies of the smokers in the smoke houses left a deep impression on Zhang Nan.

"I'll have to think about it." After all, if you want to add something to "Tang Law", it doesn't mean that you can add it. Moreover, Comrade Li Er still wants to experiment with this thing first, and then see the after-effects.

After all, those death row prisoners in the prison have been cut down, and the rest are used for experiments, although it is very cruel, but this does exist, except for the death row prisoners, the little eunuchs in the harem test the medicine for the emperor, that is simply not too much.

After taking the pill, it's okay if it's not poisonous, but if it's poisonous, then it's poisoned, and no one cares, so Comrade Li Er thinks about it first to see if this thing is as serious as Zhang Nan said, and then consider whether to add this thing to "Tang Law".

"Alright, let's go with me and see those exotic beasts. I've never seen these things, and today I don't go out, I went to other places. Li Er soon stopped mentioning this matter, but turned his head and walked towards the animal in the cage.