After agreeing with Xu Yichen's idea, Ziyun began to explain to him how to learn the auxiliary formation.

There are three necessary conditions for the casting of auxiliary formations, first: the caster must know the lines of each formation by heart, and if he wants to be able to perform it in actual combat, he must complete the complete drawing of the corresponding formation in his mind in a time equivalent to 1-2 seconds in modern timekeeping.

To put it simply, it is to use spiritual power to draw the lines of the auxiliary formation in your own mind, which is the difficulty of learning the auxiliary formation, whether it is a gain formation or a negative formation, their composition lines are extremely complex.

It is worth mentioning that when using spiritual power to draw an auxiliary formation, it can only be done at one time, and it cannot be interrupted to draw from elsewhere, so that the formation will dissipate and cannot be formed.

The second point is that you need a medium, to project the formation formed in your mind onto the specific person who is arrayed, the general medium is your own spiritual weapon, which is not difficult, and it is the easiest of the three points.

The third point is prediction, of course, the gain formation does not need to be predicted and will be added to the teammates or oneself autonomously, while the negative auxiliary formation is to calculate the effective time of the formation, judge the opponent's travel route, and lay out the formation on his action route in advance.

It is especially difficult to successfully unleash in team battles with a relatively fast offensive tempo.

After understanding the basic conditions, Zi Yun began to draw the formation diagrams in the form of spiritual power in front of Xu Yichen's eyes.

These formation diagrams are very similar to the magic arrays in some of the RPG games he is playing now, but there are many differences in the details of the patterns.

After drawing these formation diagrams, Ziyun left Xu Yichen alone to study in the pavilion, and he got up and returned to the house. Facing the copper-colored alchemy furnace, she was a little distracted, and what his senior brother said to him in the dean's room in the morning still echoed in her mind, and could not be dissipated for a long time:

"500 years ago, I was rescued by a spiritual envoy with a similar sword technique to Xu Yichen and sent to cultivate in the Xiaoyao Gate, which was only the size of a small Taoist temple at that time, and he once told me that if I have the opportunity, if I have the ability, I must help some people similar to him within the scope of my ability!"

"At first, I didn't understand what he meant, but in the next 150 years, every 50 years or so, a spiritual weapon envoy with strange swordsmanship appeared, and I realized that the person who was similar to him by the life-saving benefactor was referring to someone who was similar to him in spiritual weapon skills, but I was still weak at that time, so while cultivating, I could only ask if there was such a person in a small area. ”

"Later, the Xiaoyao Gate expanded into the Xiaoyao Academy, and my strength also improved, so I began to listen to it on a large scale, but all I got were some rumors that had no evidence, and the protagonists of those rumors died unexpectedly soon. ”

"It wasn't until 50 years ago that the disciple of the Shengde Academy who fell into the demonic path, during the encirclement and suppression of him, I found out that he was the person I had been looking for, but when I found out, it was too late, and he had already been killed by the old man Ling of the Shengde Academy!"

"This is one of the few things that Senior Brother has regretted in his life, now, so that the sword law that is similar to Engong and his resemblance is right in front of my eyes, whether it is or not, we have to try to protect him, now although the entire Spirit Weapon Continent is calm on the surface, it is already a situation where the mountains and rains are about to come, I believe that in the next few days, the entire continent will fall into chaos, and Xu Yichen is one of the key people to solve this situation. ”

Ziyun was a little unconvinced, although she also participated in the encirclement and suppression 50 years ago, and the expression and performance of the senior brother at that time were indeed a little abnormal, but she didn't believe that the future of the entire continent actually fell on a young man whose face was less than the foundation building period, so she quipped for the first time:

"Isn't this an excuse for Senior Brother to let us take special care of your bastard, right?"

And Lin Shanyue also had an unprecedented serious face this time, and he said lightly:

"Although my ability to deduce divination is far inferior to that old guy in Tianyan Pavilion Wuxiang, my intuition has always been very accurate, and this feeling of incomparable conviction has not been there for 300 years, so junior sister, it should be regarded as the willfulness of senior brother, please take care of Xu Yichen as much as possible in cultivation......

Ziyun didn't close the door of the house, she set her eyes on Xu Yichen in the pavilion, he was pinching his chin at this time, carefully studying the formation diagrams, the white moonlight sprinkled on his body, like a student studying hard in the cold window of the people. She sighed softly, and said in a voice that she could only hear:

"If the fate of this continent really falls on him, then what a sad thing it will be!"

After finishing speaking, Ziyun didn't think much about it, but came to the alchemy furnace and started the refining of the Bacon Guyuan Dan.

Nothing was said all night.

The next day, when Ziyun walked out of the door of the main house, Rao was already at the realm of not being shocked, and her face was also full of shocked expressions at this moment, because in just one night, Xu Yichen was already able to use the auxiliary formation freely!

You must know that just to completely memorize the lines of these formations, ordinary people need at least 1 year or more, but in front of Xu Yichen, who is not amazing in appearance and is not talented in cultivation, is not only familiar with it in such a short period of time, but also can use it like an arm, if this is to be passed on, wouldn't it make those who have been cultivating the formation for many years and cannot use it vomit blood and fight, and it is embarrassing and indignant!

When Xu Yichen saw Ziyun coming out of the house, he said to her with joy:

"Aunt Zi, look, I learned!"

Saying that, he also symbolically added a swift array at Ziyun's feet to show the results of his cultivation.

Ziyun had already calmed down his surprised look at this time, he walked to Xu Yichen's side, and said lightly:

"Don't say when you go out, you just learned the auxiliary formation last night, if others ask, you have to say that you have been learning the auxiliary formation for many years, do you understand?"

Xu Yichen flashed his eyes that were not big or small, as if he was telling Ziyun his puzzlement with his facial expression.

Ziyun stretched out her fingers and flicked them on his forehead, and the severe pain made Xu Yichen subconsciously cover his forehead:

"This is for your safety, if you want to be caught by formation maniacs outside the academy for research, or hunted down by those who have been cultivating auxiliary formations for a long time and don't know the essence of it, do as I say. ”

Xu Yichen nodded suddenly and said with a smile:

"It's worthy of Aunt Zi, what you think about is thoughtful!"

Like a child's new toy, Xu Yichen used various buff formations and negative formations in his teammates' surprised looks during this morning's training, which made their group support under Ziyun for a long time.