Li Yuntao roughly understands the concept of "aura", and basically knows that once the aura of most of the world enters the trough, it is difficult to recover.

The revival of the aura of a very small number of planes is mostly due to unexpected phenomena. For example, substances in the plane with a higher concentration of Reiki inadvertently fall into a world with low Reiki, resulting in a short-term phenomenon of Reiki revival.

In ancient myths and legends, immortals and mortals lived together, because, at that time, the aura was strong, similar to the fairy world, and mortals would become immortals as long as they had enough qualifications and were guided.

In the Middle Ages, immortals who lived with mortals became more and more rare, because the concentration of aura decreased, and the immortals found a way to escape from the world with relatively low aura and enter the world with higher aura, which is the so-called fairy world and god realm.

It is a long process for immortals to evacuate the world where the aura is constantly decreasing, and in this process, there will be a little immortal trace. Because, during the period when the aura is reduced, there will still be some caves and blessed lands that maintain a higher concentration of aura than the outside world.

The Cave Heaven Blessed Land is suspected to have an aura channel with other worlds with strong spiritual energy, and a large amount of high-concentration spiritual energy has poured in, ensuring that the Cave Heaven Blessed Land has become the last refuge for mortal immortals and cultivators.

Gradually, the spiritual energy channels in those caves and blessed lands were also blocked, and those immortals who stayed behind would either die of old age like mortals. Either before that, flee to the other world or alien planets where the aura resources are more abundant.

After the immortal gods gradually became extinct, some of the mortal warriors who cultivated their fur began to rise. Originally, those techniques of breathing and practicing qi were for the purpose of cultivating the truth for immortality.

But after the aura decreased and the cultivation of truth became an impossible myth, these exercises gradually became the internal skills of the heroes of the rivers and lakes. Internal strength is also a method of using aura to cultivate, but it is far lower than the level of the path of cultivation.

Even a top-level master like Wang Chongyang could not reach the Jindan level among cultivators. This is not to say that martial artists like Wang Chongyang are not strong enough, just because the aura is reduced, and the general trend is like this.

In the history of Jin Yong's martial arts in the Song Dynasty, the level of martial arts was relatively high. Later, in the Yuan, Ming and Qing dynasties, science and technology gradually rose, and martial arts gradually declined. At the end of the Yuan Dynasty and the beginning of the Ming Dynasty, Zhang Sanfeng, Zhang Wuji and others should be close to the five uniques in the world during the Southern Song Dynasty.

However, in the middle of the Ming Dynasty, in the era of "Smiling Proud Jianghu", Dugu Jiujian could beat most of the masters even if there was no internal force. "Sunflower Treasure Book" is only a little faster, and it has become an almost incomprehensible miracle. This all shows that the martial arts in this world are getting weaker and weaker. The internal force can't even connect to the home, so it's completely abused by speed and moves.

As for the middle and late Qing Dynasty, worlds such as "Flying Fox Gaiden" and "White Horse Whistling West Wind" gradually became less and less, and only those who had superb moves were considered to be good players. Those who can casually practice a little internal strength and true qi are also regarded as peerless masters. Because, many people in the rivers and lakes simply can't practice internal skills at all, and they are not much better than ordinary people.

Just the height of martial arts in Jin Yong's martial arts world from ancient times to the present, we can see the trajectory of the decline of martial arts based on profound internal strength.

And now, according to Huang Rong's investigation, not only Jin Yong's world is like this, but many worlds are like this. It should be said that the decline of all kinds of divine arts, magic, cultivation, internal strength, and mysteries is basically the general trend.

Even if Li Yuntao obtained the method of immortality, or ate the elixir such as the Life Fruit and the Peach, as long as he stayed in a world with a low concentration of aura, the effect would definitely be greatly reduced. Because, in the legend of Heavenly Court's peach, eating one increases the lifespan by thousands of years, which is in a world with rich aura. In a world like Li Yuntao, the aura is almost close to 0, so if he eats a peach with a high concentration of aura, the speed of aura is very fast. Originally, he ate a peach that could live for thousands of years in the Xianxia world, and let Li Yuntao eat it, and he could live for a hundred years at most.

"However, this honey is really delicious!" Li Yuntao scooped a spoonful of royal jelly from the tomb pie, and couldn't help but praise it, this kind of honey is not only more nourishing than modern ordinary honey, there is the so-called aura in it, although I don't know if a drop of royal jelly containing aura can last for a few seconds, but, drink more, the effect of rejuvenating the face and prolonging life is always there.

Subsequently, Li Yuntao hung a part of the Tomb Pie's royal jelly in the Wanjie Mall, waiting for the destined girl from another world to buy it. Of course, Huang Rong's price for him was 1 Jiayuan coin and 5 bottles.

Li Yuntao hung in his shop, and the price rose to 1 bottle of Jiayuan coin.

500 bottles of Tomb Pie Royal Jelly, the purchase cost is only 100 Jiayuan coins.

But when it changed hands and hung up in Li Yuntao's store, the total price rose to 500 Jiayuan coins.

"Tsk, it's really a black shop!" Huang Rong saw Li Yuntao doing this, and not only made sarcastic remarks. Although, she herself belongs to the profiteers among the profiteers.

"Thank you for the compliment!" Li Yuntao was not ashamed, but proud.

"Then, in the future, we will cooperate like this, you take the goods from my side and become my distributor. Huang Rong said. "The wholesale price is still 1 Jiayuan 5 bottles, and the retail price is you refer to the retail price in my store. ”

......

The World of the Moon, Ancient Britain.

Artoria Pendragon is feasting on a round table.

Originally, the Round Table was a symbol that Artoria and the Knights of the Round Table could discuss important matters without distinction between the superior and the inferior, and everyone could speak freely.

However, now that most of the members of the Knights of the Round Table have gone out to do all kinds of busy work, Artoria still sits at the Round Table and eats a lot of food.

In this regard, the Knights of the Round Table also have a lot of complaints, my king...... It's so delicious!

You know, the British Dynasty was not a powerful country, with a population of hundreds of thousands. Moreover, it is a feudal system, and there are not many territories directly under the direct jurisdiction of King Arthur Artoria.

Therefore, there are only two or three thousand knights directly under the Kingdom of Britain, led by these fierce men of the Knights of the Round Table. If you really want to start a major war, you can only count one or two thousand people being conscripted.

And the previous conquests in Arthur's legend were all bad weather, poor agricultural harvests, and insufficient food. So, organize men to go out to conquer and rob. According to the traditional concept of knights and kings, this practice is a wise king, and if he can't eat enough, he will take people out to rob it.

This practice is actually useless!

Such unreliable expeditions would not reward the native land, nor would they have the basis for the material and human resources to rule the conquered territories for a long time, so a blind expedition, as in history, would only hasten the demise of the British dynasty.

Seeing through all this, Artoria felt that doing something that interests her (overeating) was more meaningful than doing something hard (taking people out to fight).

"Wang, if you continue to eat like this, the finances will go bankrupt. Lancelot hesitated, but decided to persuade the foodie king Artoria Pendragon.