As for Zuihou's observations, the results are also very encouraging.

The sword qi generated by Lin Jiugu is very pure, although the spirituality is somewhat insufficient, it is harmless, although it is not as good as Zhang Tong, but among ordinary people, it can be regarded as a very good talent.

"I didn't expect this girl to be a material for sword practice!" Zhang Tong thought silently in his heart, showing more and more joy.

It wasn't until after a while that Zhang Tong explained all the sword formulas to him, and Lin Jiugu also had a feeling of sudden enlightenment.

Although this 'Great Universal Thunder Sound Sword Technique' is very exquisite, there are some places that cannot be comprehended, but in general, she can grasp the direction, just in the future, carefully pondering, you can cultivate this sword technique, as for the future achievements, it can only depend on herself.

"Okay! I have already explained the essence of this sword technique to you just now, because you are just getting started, you only need to comprehend my experience, you don't need to draw inferences, and when you have some foundation, I don't need to stop you. ”

"Yes! The disciple thanked the uncle!" Lin Jiugu received a great benefit from Zhang Tong, and she was grateful in her heart, but Zhang Tong didn't mention accepting apprentices, and she didn't dare to say more, so she could only call herself a disciple, but she still called Zhang Tong's aunt, which made the relationship between the two seem a little strange.

However, Zhang Tong didn't care about this, and didn't say anything, just answered, and then said with a smile: "Okay, you can go and cultivate by yourself!" Now that you have just given birth to sword qi, you just need to be carefully cultivated, don't take care of me, wait until two days, I will leave by myself, and you don't need to send it again." I'll come back once I'm done, and I'll have one more thing to tell you about at that time. ”

"Yes, disciple obeys!" Lin Jiugu immediately agreed, and then according to Zhang Tong's instructions, she went directly to the side and began to meditate on the spot.

Originally, Zhang Tong meant to let her find a secret room to retreat, but after thinking about it. In this Nine Immortals Village, I am afraid that there is no secret room that can be safely closed. Just like the brothers of that family, any person with some cultivation can be in this village, as if he has entered a no-man's land.

So, Zhang Tong thought about it and didn't say anything. simply meditated directly, and didn't pay attention to Lin Jiugu.

Until the sixth day, when Zhang Tong opened his eyes, Lin Jiugu was still in his meditation.

Zhang Tong glanced at her, didn't bother, stood up, and then flashed, and in a silent moment, he had already arrived outside the house. Then with a wave of his hand, a piece of mana formed by the forbidden land landed, and in the blink of an eye, it became a formation, and it put Lin Jiugu where he was. There are also several rooms next to it, all of which are shrouded in the middle.

Although Zhang Tong doesn't use much mana, the formation of this formation is quite subtle, especially the use of mana. Under the realm of refining gods, it can't be cracked at all.

This is also equivalent to giving Lin Jiugu an extra layer of protection in the future, as long as the prohibition exists. During her retreat, ordinary people were not allowed to approach her. If he encounters a master and breaks this prohibition, Zhang Tong will also notice it immediately, and then rush to help, which is enough in the world.

"This time, I passed on the 'Great Omnidirectional Thunder Yin Sword Technique' to Jiu Gu, and I don't know where she can go, so I'll wait and see. ”

Zhang Tong set up the prohibition, then looked at it again, thought silently in his heart, and then urged the sword light to rise into the air, and in less than a moment, he had already reached the sky above the dry salt lake again.

Because it coincided with the night of the full moon, although it was already night, the sky was not dark, and a bright moonlight sprinkled down from the sky and covered the bed of a dry salt-alkali lake, which shone a white light around it.

Zhang Tong came back for the second time, and he didn't need to look carefully, he went straight to the small island in the north, which was still the wreckage of the shipwreck, and after landing, the voice of Rong Yan Zhenren came almost immediately.

"Lord, you're here!" Rong Yan Zhenren has also suffered from gains and losses in the past few days, for fear that Zhang Tong will break his promise and never return, but it will be really bad.

It was not until this moment that he felt the aura emanating from Zhang Tong, and finally breathed a sigh of relief, and hurriedly released his thoughts to communicate with Zhang Tong.

"Hmm! When was the original formation breaking every time?" Zhang Tong didn't say anything else, and went straight to the center of the topic.

"On the Lord, this time is not fixed, although it always occurs on the night of the full moon, but sometimes it is early, sometimes later, but it is not fixed, but it is mostly around midnight. ”

Rong Yan Zhenren didn't think much about it, he almost opened his mouth to come, these formation changes were obviously already in his heart.

"Okay! There's nothing else to do now, just wait for tonight to see the situation, and then study a way to crack this Great Yan Heavenly Machine Array. ”

Zhang Tong said that, he didn't say more, for this Rong Yan real person, Zhang Tong did not have as much patience as he did with Lin Jiugu, the two of them were in different situations, although this Rong Yan real person cultivated to a higher level, if he accepted it, it would be more useful.

But this person's character is unknown, and he needs to be observed in the future, so he can't be trusted easily, so Zhang Tong just treats him as an ordinary subordinate.

Then, Zhang Tong directly crossed his knees, suspended above the remains of the sunken ship, still concentrating, and entered a meditative state.

Time passed quickly, the night grew darker, and the moonlight became brighter and brighter.

It was almost midnight, but Zhang Tong still didn't feel any flaws in the 'Great Yan Heavenly Machine Array', and it was difficult to detect even a trace of fluctuations.

At the same time, Xiao Jingya was also interrupted by Zhang Tong's cultivation and called outside, always paying attention, for fear that something would suddenly change in that formation, and the opportunity would disappear in a flash, if she didn't seize it, she would have to wait for the next time.

"It's coming!" Suddenly, Xiao Jingya's eyes moved and she shouted.

Because the gold-swallowing gourd had reached the forty-five prohibitions, Xiao Jingya, as an instrument spirit, was also a great increase in strength, and her divine thoughts were even stronger, and before Zhang Tong could notice it, she had already preemptively sensed the faint changes from the 'Great Yan Heavenly Machine Array'.

Afterwards, Zhang Tong realized that his eyebrows went up, and sure enough, he found that there were some problems with the operation of the 'Great Yan Heavenly Machine Array', and together with the hidden very haode aura fluctuations, it also suddenly hit and returned to normal levels.

It's just that this change is gone in a flash, almost in the blink of an eye, and it has returned to normal.

"Is it really going to disappear soon?" Zhang Tong's brows furrowed slightly, just as Rong Yan Zhenren said before, that trace of flaws appeared and disappeared very quickly, and before he could react, he was gone.

"Well, it's really fast!" Xiao Jingya also nodded, her expression even more solemn.

"How's it going? What did you find?" Zhang Tong saw Xiao Jingya's expression, and couldn't help but feel a sinking in his heart, knowing that he was not very objective.

"Let me think about it!" Xiao Jingya did not express her position immediately, but pondered.

Zhang Tong has been practicing for all these years, and he has already boiled out his patience, and when he saw that she was silent in thought, he simply didn't rush out. After all, in terms of formation, Xiao Jingya is an expert, and when she arrives in Zuihou, she has to rely on her.

For an hour, two hours, Xiao Jingya still didn't speak, as if she had become a statue, until the east was white, and then she suddenly spit out a breath of turbid air from her mouth.

"How's it going?" Zhang Tong immediately asked again.

"It's a little bit there. Xiao Jingya nodded and said, "But I still need to confirm some things, you take me around this formation first." ”

Because Xiao Jingya is the instrument spirit of the gold-swallowing gourd, although it can be manifested, it can't be too far away from Zhang Tong, once the limit is exceeded, the opportunity is limited, and she will return directly to the gold-swallowing gourd.

"Okay!" Zhang Tong replied, and immediately flew up, but the speed was not fast, and it was about thirty miles around the range of the 'Great Yantian Machine Array', and it took about a quarter of an hour to return to the starting point.

"This formation is indeed not so accurate because of the age, and the flaw that appears once a month is a manifestation of the formation's own error correction, readjustment, and restoration of the original. If that's the case, if you want to crack this formation, it's actually easy to say. As long as we prevent it from automatically correcting errors every month, as long as it accumulates for a period of time, the formation error will become bigger and bigger, and it will automatically collapse without cracking it at that time. ”

Xiao Jingya smiled slightly, and seemed to be quite confident in this method.

"Huh?" Zhang Tong didn't expect Xiao Jingya to come up with such a method, but if you think about it carefully, it is also very feasible, if the time is not too long, you can give it a try, but the time is too long, wait for ten or eight years, I am afraid that Rong Yan Zhenren will not be able to hold on.

"If you use this method, how long will it take?" Zhang Tong groaned slightly, asking the key question.

"About a year!" Xiao Jingya thought for a while and said: "Twelve months, once a month, if these flaws accumulate, it will be enough to paralyze this big array by one-tenth, then if there is time, we will wait for another year, if it is urgent, we can also forcibly break the formation, and the initiative is ours." ”

"Okay! Then do it!" Zhang Tong immediately made a decision, and then conveyed his divine thoughts to Rong Yanzhen: "Now I have determined the method of breaking the formation, but it will take some time, at least a year, can you still persist in your current situation?"

"Yes!" Rong Yanzhen didn't think about it, and immediately replied, at this time, there is no can't, if he says he can't insist, I'm afraid that Zhang Tong will turn around and leave immediately, and he won't do useless work for him again.

"Okay! It's good to be able to persevere!" Zhang Tong received an affirmative reply, and he was also very happy, he also attached great importance to Rong Yan Zhenren, if he could come out, there would be one more subordinate to the realm of refining gods, and this was the first person Zhang Tong had subdued to reach the realm of refining gods.

"I don't know how the Lord plans to break the formation?" Rong Yan Zhenren was still not at ease, and after answering, he asked again.

"This is also very simple, although this Great Yan Heavenly Machine Array is exquisite, but the thought is too long, many formations are damaged, as long as it cannot be repaired every month, after accumulating for a year, it is naturally not difficult to break the formation. Don't worry!" (To be continued.) )