"It's okay to stay here, what if you don't attract extraterritorial Heavenly Demons, but bring those Transformation God Ancestors?" Fang Huairan said worriedly.

"This question is simple, make a self-detonation formation, if you encounter the Transformation God Ancestor coming to investigate, then how about you and I remotely control the magic array to self-detonate?" Zhou Tong remembered the method used to kill demons in the sea off the Fenglin Continent, and said.

"Then how can you tell if it's a Divine Ancestor or an Extraterritorial Heavenly Demon?" Fang Huairan asked.

"I studied the formation some time ago, and there was a breakthrough in the automatic attack of the formation, I can spend more materials and arrange it into a formation that can search for the enemy according to the breath, of course, we are not seeking the enemy, nor attacking, but identifying the enemy, if it is the breath of the Terran, then the self-detonation array, not the breath of the Terran, just don't care." Zhou Tong smiled and said confidently.

Seeing that Zhou Tong was full of confidence, Fang Huairan nodded, and said in agreement: "Your research on other formations other than the teleportation array is indeed more thorough than mine, if you can automatically identify the enemy's aura, then you can do as you say." ”

"The Yin Yang Bead and the Xuanhuang Bead are arranged in different formations, each formation is sacrificed to two induction tokens, one of the induction formations is broken, and the other induction formation explodes, which token is broken, we can immediately know the situation of the formation, and when the second year is resting, come over and see the specific situation." Zhou Tong proposed.

Hearing that Zhou Tong's plan was so detailed, Fang Huairan was in a happy mood, and the princess hugged Zhou Tong and turned around twice in place.

After putting Zhou Tong down with a smile, Fang Huairan praised from the bottom of his heart: "My wife is smart, I didn't even think of this trick! With this trick, we can at least try to find out if the Yin Yang Bead and the Xuanhuang Bead are effective against the extraterritorial Heavenly Demon, if it really doesn't work, then we don't have to bother going out to find a trap and stay away from the Purple Moon Palace, there is no bait, if we meet the luck, we can't beat it, maybe we have to put ourselves in." ”

Zhou Tong smiled, and a big stone fell in his heart, he just came up with this method on his own, which is indeed the premise of all the follow-up things of the two, without this premise, those things are not tested or worried, and there is no point in worrying about it.

After discussing the layout of the Yin Yang Bead and the Xuanhuang Bead for a while, the two let Zhou Tong rest for a long time, and then the two went out again to test the situation of the Great World Mirror in the universe.

Fang Huairan sacrificed the Great World Mirror and flew to the sun, facing the scorching heat of the sun's essence fire.

The Great World Mirror was suspended motionless under the sun with the blue protective mirror light, and Fang Huairan nervously sensed the consumption of the Great World Mirror Light in the Secret Demon Shuttle......

This time, the two of them experimented for another five days, whether it was the direct scorching of the sun or the low temperature of the universe with their backs to the sun, the Great Thousand World Mirror performed very well, and it basically didn't consume much mana, so it was easy to resist.

Fang Huairan even estimated that even if a little mana did not recover, he would keep driving the Great World Mirror to fly in the universe, and conservatively estimated that it could fly for at least thousands of years, which showed that it consumed very little mana.

Fang Huairan even felt that if there was a chance in the future, he could try whether the Great Thousand World Mirror could resist the Nine Heavens Gang Wind wrapped around Dongyang Star, if even the Nine Heavens Gang Wind could resist, then the two of them could fly in the universe casually without the help of the Purple Moon Palace.

However, Zhou Tong thought about it, and still felt that it was unlikely, whether it was the sun essence fire or the low temperature of the universe, it would not directly act on the body protection mask, even if it was with temperature, it would also be indirect, and all the Great World Mirrors could consume very low resistance.

But if it is replaced by the Nine Heavens Gangfeng that directly acts on the body, Zhou Tong feels that the Great Thousand World Mirror will not be able to withstand it for long, and the Qianyuan Gang Wind that they faced in the Hidden Spirit Garden before has made the two of them suffer a lot, and the replacement of the more powerful Nine Heavens Gang Wind is by no means something that the damaged and unrestored Great Thousand World Mirror can easily resist.

Fang Huairan thought about it and agreed with Zhou Tong's analysis. After the Great World Mirror test was completed, the two began to look for a suitable place to set up the formation and place the bait Yin Yang Bead and Xuanhuang Bead.

In the end, the two of them arranged the self-detonation array that Zhou Tong said in the two natural caves in the crater mountain that were hundreds of kilometers away from the Purple Moon Palace, and then placed more than ten Yin Yang Beads and Xuanhuang Beads in the array.

After placing it, Zhou Tong had an idea to arrange all the yin and yang beads and Xuanhuang beads into a modified formation similar to the spirit gathering array, this formation is not to transform the yin and yang beads and Xuanhuang beads into aura, but to slowly emit yin and yang Xuanguang and Xuanhuang divine light.

This was also an accident obtained by Zhou Tong when he was researching the Spirit Gathering Array, at that time, because the quantity, quality, and speed of the Yin and Yang Xuanguang and Xuanhuang Divine Light emitted by this array were not very powerful, he felt that this array was useless, so he almost forgot about it.

It wasn't until the Yin Yang Bead and the Xuanhuang Bead were released that Zhou Tong suddenly remembered this formation.

Of course, the speed of the Yin Yang Xuanguang and Xuanhuang Divine Light emitted by the formation is very slow, so the consumption of Yin-Yang Beads and Xuanhuang Beads is not high, according to Zhou Tong's calculations, it will take at least ten years to completely consume the Yin-Yang Beads and Xuanhuang Beads.

According to Fang Huairan and Zhou Tong's original plan, if the formation has always existed, then come over at this time next year to have a look, and then decide whether to replace it with a new one according to the situation.

Since he looked at it every year, Fang Huairan discussed with Zhou Tong to double the speed at which the formation released the Yin Yang Xuanguang and Xuanhuang Divine Light, so that the Yin-Yang Bead and Xuanhuang Bead could be used for five years, and there were still four-fifths left after a year.

After processing the formation, Fang Huairan refined four formation induction tokens on the spot, the tokens only have the use of induction, and they are not difficult in themselves, so it didn't take long to refine them.

Fang Huairan and Zhou Tong sealed the cave with stones, soil, etc., because if they were exposed to the cosmic environment, whether it was a formation or a yin and yang bead, it would not take long.

After getting these done, forget it, there were still three days left before the twenty-day use period of the Secret Demon Shuttle of the Heavens and Stars, and after the two of them simply cleared their traces, they drove the Secret Demon Shuttle back to the Purple Moon Palace.

After entering from the No. 10 Defensive Tower, Fang Huairan and Zhou Tong saw a kind of foundation building period disciple who was on duty here last time, as for Chen Mohan Ancestor, because he was not on duty this year, he was still not in the tower.

After quietly inquiring about the movements of the three Transformation God Ancestors, the two of them were completely relieved, because according to the answer of the deacon disciples, the three ancestors had been on duty in the tower for the eighteen days that the two had left.

Moreover, in the past eighteen days, there have been no extraterritorial heavenly demons coming, and the three ancestors plan to release the aura of a monk after a period of time to attract the arrival of extraterritorial heavenly demons.

After understanding the situation, Fang Huairan and Zhou Tong returned directly to their residence, and according to the warmth formation provided in the refining method of the Heavens and Stars Secret Demon Shuttle given by Chen Mohan, Zhou Tong arranged a formation in his residence to warm the Secret Demon Shuttle.