"I said, I'm such a big living person, can't you see it?" After a while, Jiao Haiqing asked.

Wei Renshi looked up from the pile of parchments, glanced at him, and said, "Oh, I see." ”

Jiao Haiqing shook his head and smiled, and said, "In the past six months, I have really gained a lot of knowledge. It turns out that this sea to sell things can have so much exquisiteness. Hey, have you ever seen someone with green eyes? The eyes were as green as jade, and they looked pleasing to the eye. The canons of the Great Food Law are really fucking strict. I've also seen a group of Kunlun slaves, which are much darker than the ones we saw in Chang'an City. The body is like ink, and I can only see my teeth and ...... every night."

"Okay, okay, look at your lonely appearance." Wei Renshi mocked him and said, "Every time you go to sea in the future, you can get some of these things, don't stop." Since you're back, all you need is a sea boat. ”

Jiao Haiqing nodded: "Yes, it's just a sea boat - a good sea boat!" ”

Wei Renshi said: "Datang's sea ships are already good now, if there is enough money and technology and good enough shipbuilders, I can improve better sea ships - but at the moment, it is estimated that there is no support, and there is no way." I'll ask for the ship tomorrow, and you can rest for a while. ”

Jiao Haiqing nodded, and said: "The profits of maritime merchants are really big, I personally took these two trips to find out the doorway inside." I thought, even if I was in the maritime family, I didn't know that there could be such an amazing profit here. It's nothing more than other people and the court. ”

"It's an asymmetry of information." Wei Renshi said: "You know, you will be able to make money from this in the future. If others still don't know, they won't have this gain. But naturally, it's not enough to just know, after all, not everyone has this courage, and not everyone is willing to suffer this hardship. ”

Jiao Haiqing listened, looked deeply touched, nodded and said, "Yes!" This is not something that anyone can bear. You don't see that I'm so alive right now, but you don't know that I almost died on the ship and didn't come back. ”

"Oh?" Wei Renshi asked, "Did you meet a sea thief?" ”

Jiao Haiqing shook his head and said, "No, there are many maritime merchants now, and the sea routes that sail are all close to the shore, and those who run the maritime merchants all have people. I don't know why, when you go to sea, people are prone to get sick. I went to sea this time, and it was just over a month before my eyes became dizzy and weak, and then I had a nosebleed and my limbs were in severe pain. Fortunately, I arrived at Dashi in time and invited a famous local person to heal it, so it was good. I'm lucky, the disease is the mildest. On that trip alone, there were more than a dozen people on the ship who died of this disease. ”

Wei Renshi was stunned for a moment, and suddenly asked: "Did the patient first bleed from his teeth and mouth, and then vomited blood and urinated blood, and the legs were in severe pain, and finally his legs were shaped like frog legs?!" ”

Jiao Haiqing's face turned pale: "Brother Renshi, how do you know?!" The people who died were like this, and the people on the ship said that they were chosen as slaves by the monsters of the sea, so they became like frog legs. It is to make it easier for their souls to swim after going to the sea, so that the monsters in the sea can guide and drive them. Brother Renshi also knows? ”

Wei Renshi slapped his head at this time, and he felt great regret in his heart.

Just thinking about making money by maritime merchants, they forget that the navigation technology is backward in these years, and the materials on the ship are limited after going to sea, so the people on the sea ship are easy to lack vitamins due to the lack of fruits and vegetables at sea for long distances, which in turn leads to scurvy!

Historically, the advent of the Age of Discovery has triggered countless people to plunge into the ocean in search of wealth and opportunity.

And there is a disease that is worshipped as a demon by navigators and sailors, but it always haunts the sailors, takes their lives, and becomes the demon they fear the most.

That's scurvy.

Scurvy is a disease caused by a lack of vitamin C in the human body, and after a severe deficiency of vitamin C, it can develop into scurvy and show symptoms of scurvy in just three to four months.

But at that time, no one knew why it was a disease, so they thought it was a demon on the sea.

The food on the sea ship is mainly cured meat and fish, and the lack of fruits and vegetables leads to the lack of vitamin C in sailors, which in turn causes scurvy. As long as you can ensure that you can eat fruits and vegetables during the voyage and replenish vitamin C in the body, you can avoid the appearance of scurvy.

"It's not a monster in the sea, it's a disease." Wei Renshi explained to Jiao Haiqing: "When sailing in the ocean, the most feared thing is malnutrition. People on board who are short of vegetables and fruits for a long time are more likely to suffer from this disease. The name of this disease is scurvy, and once you get this disease, it is a mortal disease in terms of our medical skills today. This is also the most important reason why they will travel long distances and die for a lifetime. To prevent this disease, it is very simple, that is, you can eat some vegetables or fruits when you eat normally. However, vegetables and fruits are often highly perishable and cannot be carried in large quantities over long distances. So the people on the ship are susceptible to this disease. The reason why you are less ill than those people is because you are the master, and there are some vegetables on the ship, and you can eat some of them first. You eat more vegetables than they do, so your symptoms are milder. ”

"How so?!" Jiao Haiqing was taken aback.

Wei Renshi nodded and thought about it.

Traveling thousands of miles is an extremely dangerous thing in itself.

Ocean voyages are not a good task. Scurvy alone is a big problem.

Not to mention insufficient vitamin intake, even if you don't have scurvy, it will lead to weakened immunity and become more susceptible to illness.

Wei Renshi let out a long sigh, these things must be well prepared.

Wei Renshi just sat down like this, and began to list the things he needed to prepare into a memo in his head.

Thinking about what needs special attention during an ocean voyage, fresh water and food, vegetables and fruits are also essential. These are all things that guarantee basic survival and health.

In order to prevent scurvy on board the sea, it is necessary to carry enough vegetables and fruits and vegetables.

In later generations, why was Zheng He's fleet in the Western Ocean able to rarely have scurvy during ocean voyages?

It was because tea had become popular at that time, and it became something that ordinary people could afford to drink and were willing to drink. At that time, most of Zheng He's sailors to the West were southerners, who liked to drink tea, and had to carry a considerable amount of green tea on board before each voyage, which was rich in vitamin C. By the time of the Ming Dynasty, the techniques and methods of kimchi and pickles had been very mature, and they had mastered a technology that could preserve vegetables for a long time and then carry them to the sea, and even used beans to germinate bean sprouts on ships to eat. These habits enabled Zheng He's fleet in the Ming Dynasty to skillfully avoid scurvy.