Unconsciously.

More than two months have passed since the "Secret Stone Incident", and Han Dong is also a senior sophomore mystery apprentice.

Both library and mystery learning are almost reaching the limit of the current stage, and there is little improvement in continuing to study.

As for the level of the "Little Demon Eye", it is directly linked to Han Dong's head.

Before the Faceless Skull is upgraded, the Little Demon Eye can only remain at the [Volume 2 - Pupil Seal] stage.

This means that the only way to increase your strength is through Destiny Points...... Han Dong even faintly had the idea of hitting a bottleneck and beginning to be eager to break the seed.

The matter of breaking the seed has to be done step by step, and Han Dong also slowed down his mentality as much as possible.

Therefore, in the past two months, Han Dong has put his mind on a side hustle that he is very interested in.

[Alchemy].

The level of science and technology in the Holy City is stuck in the first industrial revolution.

Due to the advent of higher life, a very small number of humans were confined to live in sealed cities.

The main consideration is not the development of science and technology, but how to obtain the ability to fight life outside the city from the destiny space.

In a world where technology is far inferior to Han Dong's life.

Among them, the retention of [Alchemy] is a good example.

Alchemy, in essence, is an ancient chemistry, and human understanding of chemical reactions is only superficial (failing to achieve the microscopic level).

However, due to the presence of magic and abilities in the Holy City, the development of its alchemy is also different.

The alchemist will understand the various chemical reactions from the corner of magic, resulting in a unique kind of technology tree from Han Dong's former world.

The preparation of various types of agents is indispensable.

Highly effective potions refined through alchemy, they can provide instantaneous energy replenishment, health regeneration, and physical replenishment.

Some of the more advanced potions can even increase combat effectiveness, increase magic efficiency, and even provide intuitive combat effects, which can give knights who enter the space of destiny great hope for survival.

In Han Dong's long-term research on alchemy, the most important point is the "symbol".

The alchemists in the Holy City don't know what chemical formulas they are, and they don't know what chemical formulas they are.

They fuse alchemical reactions with their own magic, expressing them in the form of abstract "symbols".

For example, in the preparation of an active agent, the symbol is [Я].

Simply draw a formation with the symbol on it, or wear gloves with the symbol on it.

By preparing the raw materials in proportion, the alchemy magic can replace the activation energy required in the chemical reaction, allowing the reaction to take place directly.

Deceptively simple.

In fact, the drawing of symbols is also a science.

The library contains a book called "The System of Symbols", which is more than 1,000 pages thick and nearly a million words to describe the drawing of symbols and the details in them.

At the same time, in the process of alchemy, it is also necessary to test the alchemist's control of magic, and drive the "symbol" evenly or explosively, and the precision of each link will affect the quality of the final alchemy product.

For some high-level alchemy products, multiple "symbols" are required to be achieved through 'overlapping', 'concatenation' or 'complex fusion', so there are also multiple driving steps.

Once a link goes wrong, it will lead to the failure of alchemy, and may even lead to a major accident.

Due to the specificity of the symbols, the alchemists in the Holy City specialize in a certain mode of alchemy.

…………

During the period when Han Dong was reading books and learning and memorizing basic symbols, he was not affected by this solidification pattern.

After all, Han Dong's head itself memorized the periodic table and a large number of reaction equations.

If he had enough time, Han Dong could even create his own symbols based on some equations, so as to make some products that had never been heard of in the Holy City.

But...... Since Han Dong embarked on the path of minoring, it means that 'time' will be squeezed out.

Therefore, Han Dong can only focus on making money instead of scientific research and development.

After investigation, all kinds of medical drugs and energy drugs are basically saturated.

Moreover, a novice alchemist like Han Dong may not be able to circulate in the market because the purity of the medicine he makes may not be up to standard.

However, Han Dong aimed at a blind spot in the market in a short period of time.

"Stress"

At this stage, a problem that cannot be avoided by human beings.

The main source of stress is the mental aspect.

Because he saw the indescribable faces of the creatures outside the city,

I heard some kind of terrifying whisper implanted in the cerebellum,

or the trauma of pollution that is on the verge of death,

Even if the pollution is purified by the holy light, the mental pressure in the brain still exists, surrounding the brain like a nightmare, and if it is not vented in time, it will lead to insomnia, hallucinations, self-harm, and eventually suicide.

In a way, it's similar to "depression".

The preparation of stress-relieving elixirs in the Holy City is very complicated, often involving more than a dozen "symbols...... The resulting potion is very precious and expensive.

These potions are often given to important members of the Order for use during the Expedition.

In Han Dong's memory, there are a lot of molecular formulas and production processes of antidepressant drugs.

After all, during the postgraduate entrance examination, he basically turned the book "Medicinal Chemistry" to the edges.

There is an antidepressant drug that can be easily prepared, which gave Han Dong the idea of mass production...... If the effect is good and mass production can be realized, a steady stream of funds will flow into Han Dong's hands.

And the Holy City will have an additional stress reliever at an affordable price.

……

Serotonin (serotonin)

It is widely found in mammalian tissues, especially in the cerebral cortex and synapses, and is a messenger that can produce pleasant emotions.

Serotonin affects almost every aspect of brain activity: from regulating mood, energy, memory, and even shaping a person's outlook on life.

Studies have shown that people with low serotonin levels are more likely to develop depression, impulsive behavior, alcoholism, suicide, aggression, and violent behavior.

I even suspect that the rate of serotonin synthesis in the brain of humans who have been 'polluted' is severely hampered.

Let's try to create a drug that can catalyze the synthesis of serotonin in the human brain through alchemy.

However, compounds with polycyclic structure may be extremely difficult to prepare in this era...... Even after passing the laboratory level, mass production is by no means easy.

Give it a try...... If I succeed, not only will I benefit greatly financially, but the entire Holy City will also be better under pressure.

The funds for the experiment period should be borrowed from Demps first.

After the finished product is produced, I will apply for research funding from Mr. Black and White. ”

Han Dong was able to memorize all the formulas of his antidepressant medication in essence.

A batch of benzene-containing substances was acquired, and he immediately used Mr. Black and White's privileges to travel to the out-of-town area.

This time out of the city naturally also takes Demps, or every time he goes out of the city, he will bring Demps with him...... The project sponsor has to be pleased.

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