Survival Day 26.

The integration of natural selection tribes has almost been completed, ranking first, and has opened up a total output of nearly 2w+ from the second-place Luohong tribe.

While attracting admiration from all walks of life, many players have also guessed who the boss behind this tribe is.

The prototype of the tribe has been decided, so Tang Zheng didn't worry about it anymore.

After several days of delay, the progress of civilization may have been overtaken by some players.

However, the small stages of civilization are all small problems, and the first prizes given can only be considered ordinary.

The best you can get, but it won’t affect your development.

As long as no one surpasses the stage of great civilization, it is not a problem.

Tang Zheng got up early today, clicked the opening curtain, and swept through the eight semi-industrial side tasks one by one.

The "steel" branch line was preferred.

As an upper-level substitute for iron, steel has better quality material structure than iron in terms of hardness and durability.

Moreover, after steel is produced, it has a wide range of uses and can also radiate to subsequent civilization branches.

Buildings made of steel also have a civilization level bonus.

Reinforced concrete can also be made.

This sturdy building material mixed with cement became the spine of a modern house.

It can be said that it has many functions.

Looking back, you can find time to renovate the small stone house you currently live in.

The bearing capacity of the steel bar is very strong, so there is no problem in building a three-story big field.

There is only one goal of civilization development, which can enable humans to live a better life.

The main element of the alloy product of steel is made of more than 90% pig iron.

So it is also called steel.

In addition to iron, a small amount of trace elements such as carbon, manganese, phosphorus, sulfur, etc. need to be added to the finished steel with good texture.

Otherwise, the hardness and stability of steel products will be greatly reduced, and the conditions of "high-quality steel" given in the side tasks will not be met.

"Iron, carbon and sulfur are easy to deal with, but how to operate the remaining manganese and phosphorus." Tang Zheng looked at the description of the properties of "steel" in the picture book and fell into deep thought.

He had just tried it, but the synthesis table could not directly complete the steel refining.

You need to make it yourself at least once, and draw the production blueprint and submit it to the synthesis station to absorb the memory. You can only produce it manually without having to make it yourself. You only need to submit the materials to produce it.

Various metal or non-metal elements on the periodic table are discovered not overnight.

All of them are precipitated through the long river of human civilization for thousands of years.

Although with the civilization level of the native world, there are already very good conditions to refine these elements.

But for most players who are still in the Bronze Age and even have a lower level of civilization.

It will be very difficult to extract various elements of the periodic table.

As the saying goes, everything is difficult at the beginning, Tang Zheng plans to start refining phosphorus elements.

The refining of phosphorus elements can not only make steel, but also make various auxiliary props such as matches, smoke bombs, and incendiary bombs.

Compared with the scientists who discovered the phosphorus element in the earliest times, Tang Zheng at least has records, and just need to find the right method to achieve twice the result with half the effort.

Open the picture book, enter ‘Phospheric’, and a bunch of results will come out soon.

Most of them use high-tech machines to extract phosphorus, which was directly excluded by Tang Zheng.

If you can have high technology, you still have to look through the picture book to find a way to make it?

After screening one by one, Tang Zheng's eyes remained on a document called "Basic Refining Methods of Phosphorus".

I don’t know where this document was dug out. The picture book has a very powerful encyclopedia function. Even the oracle bone inscriptions recorded thousands of years ago has long disappeared into the long river of history.

But as long as it has been born, it has existed.

Then the Encyclopedia of All Things will definitely be able to find records about it and translate it.

Sometimes Tang Zheng is quite fortunate that he is the first player in the world to obtain SSS-level talent and has given the reward for the picture book of all things.

Even if you pick it out alone, it is no less than an SSS-level talent.

"Organic living organisms contain some of the phosphorus elements. It is one of the important components that promote teeth and bone collaterals. The easiest way to extract is... clams?" Tang Zheng was stunned when she saw the last line of words.

The method of refining is very magical.

Urine distillation method...

The specific operation method is to heat and evaporate fresh human urine until the water in the urine is dried, and a part of black residue will remain, including a large amount of phosphorus.

Place these black residues in a humid place and let them corrode, then add a certain amount of fine sand to mix for secondary distillation.

This time, we choose to collect the evaporated water.

After these moisture solidifies, a white and yellow solid substance - phosphorus is formed.

“emmm…”

Although it sounds very spoof, Tang Zheng checked the encyclopedia of the picture book.

In the long river of human history, people who discovered the element of phosphorus for the first time really tried this way...

But the reason for refining urine is very nonsense...

It was like the first human being to extract gunpowder, just trying to see if this substance could refine the elixir of immortality.

The thoughts of those who extract drugs are the first to commit the crime of greed!

He thought there was a small amount of gold in his urine, otherwise why was it light yellow?

As long as the urine is evaporated, the remaining solidification must be gold!

As a result, gold was not found, but the value of the elements found was more than the wealth that gold brought to him!

It can only be said that humans are a very magical species, but it is precisely because of these wonderful ideas and bold attempts that have created countless prosperity in modern civilization.

Tang Zheng looked down at his crotch...

If it really doesn't work, it's not impossible...

This is called devoting oneself to civilization!

Civilization, how can civilized things be considered despicable?

Not shabby!

Fortunately, just when Tang Zheng was about to devote herself to science, she glimpsed the second half of this document from the corner of her eye and saw another method of phosphorus extraction.

skeleton.

Of course, this extraction method was found after successfully obtaining phosphorus by urine extraction. More people began to study this substance and found a more convenient method.

The extraction principle is almost the same as that of urine extraction, but the bones must be ground into slag first, and then the moisture inside them is evaporated to dryness over high heat.

Do it as soon as you say it.

Tang Zheng rushed directly to the ranch and caught an ostrich.

After two steps, it can help it complete physical salvation. Throw the ostrich meat into the inventory to keep it fresh. After shaving the bones, smash them with a thick iron rod, and then crush them back and forth dozens of times until they are broken into pieces.

Put on the pot!

The bonfire was filled with firewood, and the bone slags were thrown into the pot and stir-fryed until a smell of paste floated out.

Lanlan, who was learning more knowledge through the forum in the house, thought that her master had made the dishes, so she pinched her nose and ran out to take a look.

But I saw the master facing away from her and bursts of excited and low laughter.

"Hehehe, it's this feeling, it's this taste."

"Master is so strange..." Lan Lan was scared and crawled back into the house.

After frying all the moisture of the bone residue, a pile of black paste-like solids were obtained.

Tang Zheng had an idea and opened the picture book for the dark food.

【Black paste particles (no grade)】

Description: It doesn't seem to be of any value, but it seems that some substance can be extracted from it. You can try to put it in a humid place...

...

I can only say that the picture book of all things will always be a god!

Even unknown objects can give some tips.

When it comes to humidity, Tang Zheng has something to say.

The air in the lakeside hut in the forest is very humid every day.

It's not good to be too wet, and the body can't stand it. When you touch it every day when you sleep, it's a lot of wet

wall.
To be continued...