The Great Annihilation is the turning point of all the history of this world and the beginning of the so-called "Deep Sea Era".

According to what Nina said, Duncan finally roughly understood what kind of earth-shattering changes had happened in this world, and realized that this world was not as strange and dangerous as it is now.

According to historical records, the world before the Great Annihilation was a prosperous and safe paradise.

The ocean at that time was not yet the "endless sea". The limited sea water did not occupy more than 95% of the world's surface like it does today. Humans still lived on the vast and safe land, and even in the ocean, there were no dangerous phenomena such as the spirit world, the abyss, and the subspace.

The "Age of Order" recorded in history books felt to Duncan more like the world he was familiar with - although modern people would look back at the ancient times when there were no "abnormalities" with surprise and disbelief, to Duncan, the way the world looks today is completely wrong.

History books do not provide a detailed explanation of the key event of the "Great Annihilation". Although the archaeological community has been making efforts in this regard, there are still huge differences among various city-states and nations about ancient history. No one knows how the so-called Great Annihilation happened, nor does anyone know what the essence of the disaster was - great chaos and fog shrouded that upheaval, and behind the fog is today's deep sea era.

The sea water that came from nowhere submerged more than 90% of the land. The remaining survivors of civilization established city-states and fleets on the remaining archipelagos and small pieces of land. The boundless sea and sea fog brought strange things called "anomalies" and "visions", which still threaten the survival of civilization.

Nina didn't know that there was a ghost captain from a foreign land in front of her who was absorbing knowledge from her words. She just thought that her uncle was testing her homework - her uncle hadn't been in such a good mood for a long time. She just felt very happy, and even felt that this moment was particularly precious, because she was worried that Uncle Duncan would become the same as before at any time... and based on past experience, this was almost inevitable.

As soon as the effect of the liquor wore off or the painkillers ran out, my uncle would become extremely irritable, angry and hysterical.

So she wanted to show Uncle Duncan her progress before he got sick again - maybe that would keep his good mood going for a day or two longer.

"...Mr. Morris is very interested in the history of the Kingdom of Crete. He is an expert in this field. He told us that although the ancient Kingdom of Crete only lasted a hundred years, it was the first civilization to stand up from the ruins and fight against anomalies and visions after the advent of the Deep Sea Age. The experience they have gained over a hundred years is still guiding most people in the world today - the most important of which is their classification method of 'anomalies' and 'visions'..."

"The classification method of 'anomalies' and 'phenomena'? Have you learned this?" Duncan raised his eyebrows and did not forget to guide in his words.

He had been very concerned since he heard it just now, and now he became more and more convinced that in the eyes of ordinary people in this world, those unreasonable things should be strictly distinguished. Some things are called "abnormal" and even have numbers, but other things... seem to be called "phenomena" separately, and not like his previous impression, all of them are generally classified as "abnormal".

He had never heard the detailed knowledge in this area from Goat-Head before on the Lost Homeland, and now what Nina learned in school can finally make up for his lack of common sense in this area.

Nina nodded, recalling what she had heard in class and said, "Mr. Morris taught us that the easiest way to distinguish between anomalies and visions is scale.

“Generally speaking, anomalies are small in scale, often limited to an object, an animal, or even a ‘person’;

"Most anomalies can be moved artificially, and their range of influence is limited. Many anomalies only affect one target at a time. With specific methods, most anomalies can be safely sealed or isolated. Some of the more harmless anomalies can even be 'utilized' like tools through specific methods.

"The scale of visions is much larger than anomalies. The smallest vision is as big as a house, while larger ones can cover an entire city-state, or even larger than that... so large that it is unimaginable.

"A considerable number of anomalies cannot be moved artificially. They are either fixed in one place or move according to their own will. Their influence is far greater than that of abnormalities. Usually, anomalies can affect an unlimited number of targets within their effective range, so that they can almost be equated with 'natural phenomena', hence the name 'anomaly'.

"Unlike anomalies, almost all 'phenomena' cannot be sealed or controlled. They exist in the world like natural phenomena, operating without interference from the outside world, and naturally affecting all targets within the range that meet the conditions. Since most phenomena are dangerous, all people can do is stay away from these dangerous phenomena, or use specific methods to avoid becoming the target of the phenomena...

"Fortunately, the most dangerous anomalies usually do not move. The pioneers have helped us identify these dangers, so we can keep a safe distance from them..."

Nina spoke seriously, and then as if she suddenly remembered something, she quickly added: "Oh, by the way, the old man also specifically mentioned to us that these judgment methods and characteristics are only 'usually effective' - anomalies and phenomena are unreasonable things, so no matter how people summarize their experience, there will always be anomalies or phenomena that do not conform to the definition that suddenly appear, and sometimes anomalies and phenomena will even be interchanged, and there are also cases where phenomena are interfered with and eliminated by human intervention.

"For example, in the year 1830 of the New City-State Calendar, an anomaly called 'mycelium' went out of control in the city-state of Lunsa. The local church guardians spent a lot of money to exile this out-of-control anomaly to a nearby island. In 1835, that island was determined to be promoted to an anomaly, which was later called Fungus Island. But in 1844, the great saint Paladin took his life to store the Fungus Island in his own urn, so the anomaly 'Fungus Island' was removed from the list in the same year. It became an 'anomaly' again, called 'Paladin's Mushroom Bottle', and is now sealed in the underground reliquary of the cathedral in the city-state of Lunsa..."

Duncan listened to everything Nina said with full concentration, his mind working rapidly, while at the same time he concealed his inner emotions with a calm expression.

In this short breakfast, the information he collected exceeded the total of what he had collected in the past many days on the Lost Homeland!

Establishing communication with the land and setting up an outpost in the surface city-state is indeed the right idea - civilized society is the summary of most of the world's intelligence!

He subconsciously looked at the girl in front of him who was still talking, and felt quite emotional.

A civilization that has developed normally to the industrial stage will definitely find ways to compress and summarize the basic knowledge of social operation into its own education system. A child living in this system may find it difficult to realize what a treasure trove the textbooks they are exposed to on a daily basis are:

That is the knowledge accumulated by countless people over countless years, and has been sorted and integrated into a structure that is most suitable for learning and absorption through years of combing. Those books contain the most ingenious "nutrition compression packages" in the world, so that people like a blank sheet of paper can quickly become parts of the functioning of society with the least cost in time and energy.

Even Nina, who loves learning, could not realize this point - only Duncan, a "foreigner", could realize how valuable this knowledge is and how easy it is to absorb.

Nina didn't realize what Duncan was thinking. She just remembered what her respectable history teacher had said in class -

"…So Mr. Morris said something to us at the end of the last class. He said that people have summed up countless rules in the process of dealing with 'abnormalities' and 'phenomena', but there is only one rule that is truly forever valid, that is, 'no matter how many rules we have summed up, there will always be abnormalities or phenomena that do not conform to the rules appearing in the world.'

"This law is also called the 'eternal zeroth law' by scholars, and is tacitly ranked first in all books and papers in related fields. Based on this, people also proposed the famous 'law of permanent misalignment of anomalies and phenomena'. Until today, this law has never been broken..."