After listening to the descriptions of the two, Xu Yang finally understood.

The "combination attack" golden book is actually the "moving" golden book that Xu Yang got in the Black Palace No. 21 with the "moving" golden book, which is a prop of the same nature and can be used in the underground palace.

The function of the joint attack book is to form a team of three people and treat it as one person! When passing the level, the difficulty will not be increased by the three people participating in the battle. The strength of the spirit beast is still no different from that of one person when challenging it.

The status and strength of these two tribes of the Netherworld Tribe in the clan are not as good as those of the Netherworld Tribe. After they joined forces, they challenged the spirit beasts all the way, and the secret keys they obtained were all under the Kingword Tribe. The two of them only got one star secret key they had obtained when they first entered the outer black palace.

Xu Yang nodded secretly. This joint attack on the golden book plays a great role in the weak Xuanmen working together to explore the Black Palace, which is more difficult to the inner layer.

Without waiting for Xu Yang to say more, the two World Honored Ones had obediently taken out their own one-star secret keys and handed them over to Xu Yang.

"It seems that although the secret key cannot be obtained by killing and robbing people, it can be obtained by blackmail when the other party is alive." Xu Yang understood another problem.

"Fellow Daoist Xu Yang, you have finished asking questions. Can you let us go?" The two worlds of the Nether Clan said in a low voice, cautiously.

Xu Yang said: "It's still early. Tell me all the grand voice prompts you have learned after passing each level! If there is a trace of false concealment, I will definitely not forgive me."

In this strange underground palace, collecting intelligence is naturally the top priority. Rules and clues as prompts for grand voices are the top priority.

The two Buddhas did not hide the information at all and said it very happily.

Xu Yang listened carefully. Among the clues about the White House locations, Xu Yang had heard of them. However, there was a message about the secret key, which was the first time Xu Yang heard!

"Five one-star secret keys can be combined into one two-star secret key?" Xu Yang asked, "Are you saying true?"

"It's true! This is the great voice prompt he received when he got the five one-star secret keys, and he did successfully synthesize it." said the World Honored One with all limbs.

Another World Honored One of the Underworld tribes added: "However, the two-star secret key obtained through synthesis can only be used to open the two-star restriction, and cannot be used to synthesize higher-star secret keys."

Xu Yang nodded with satisfaction. This was very precious information.

In this way, although the value of the one-star secret key has been improved, it has limited effect. The inability to synthesize again means that there is no way to synthesize it into a three-star secret key layer by layer, not to mention the four-star or even the top five-star secret key.

In the end, Xu Yang confiscated the storage rings of the two kings of the Underworld, drove the corpse and gongs, and waved them to leave.

"Xiao Xuanzi, why did you let them go?" asked Bronze Ban.

Xu Yang said: "These two people have provided me with a lot of information. Besides, with their strength, after losing the corpse-driven gong, the inability to control the Buddha's corpse refining is no longer a threat to me. Killing is useless."

"This is a bit different from you," said Bronze Plate. "When you were in Zhongzhou, you wanted to kill all the alien races so that you could reign over the Tianxuan world."

"When the realm is different, my ideas will naturally change." Xu Yang sighed and said, "When I was in Zhongzhou, I witnessed the atrocities of the dog tribe slaughtering the city and the blood flowing thousands of miles away. Naturally, I was filled with anger and wanted to kill all the alien races. But in Yingzhou, although the human race was bullied and the mountains and rivers were broken, I was not massacred in general, so my intention to kill naturally faded."

"Is there any influence of that little fox here?" Bronze plate suddenly asked.

"Caili?" Xu Yang was slightly stunned, then smiled and said, "Maybe... you're thinking too much."

Bronze plate laughed and said no more, then said, "Now, your saint's ancient corpse has also been used, but it has not been able to kill King Jin Tai and Ming Chou. They will definitely spread among their respective races and say that your trump card has been used up. What plans do you have next?"

Xu Yang smiled and said, "Although the ancient saint corpse is powerful, it has too many restrictions and is too few to take action, so we should focus on improving our own strength! Now, I have five one-star secret keys and one two-star secret keys, which is just right to take advantage of the treasures in the No. 33 White House to cultivate and improve myself!"

When Xu Yang was speaking, he had already seen a blue light and reached out to grab it! The blue light fell into his palm like a horse, squirting and moving endlessly.

"It's really a strong ban. Without a secret key, it's impossible to open it." Xu Yang said as he observed the blue light in his hand.

The blue light was like a transparent eggshell, tightly wrapping the treasure inside. Now Xu Yang held it in his hand, and he could vaguely see the clues of the treasure in the shell.

The treasures in the green light were actually red blood! There were as many as five in this cluster of green light.

"It's a pity! I don't lack blood and soul, what I lack is the understanding of the law! Although I have had a deeper understanding of many laws and principles, it may not be enough to make a breakthrough with this." Xu Yang shook his head and said.

"Xiao Xuanzi, why not give it a try, that white light ball." An illusory arrow appeared on the surface of the bronze plate, pointing to a white light ball in the air. As the white light ball continued to fly, the illusory arrow on the surface of the bronze plate was also constantly changing directions, pointing out the direction to Xu Yang.

"Well, two-star ban?" Xu Yang knew that the bronze plate would not be aimless in important matters. He immediately reached out and grabbed it, and a colorful hand grabbed the white light ball flying in the air!

After grabbing, Xu Yang suddenly noticed the strangeness of the white light ball! As a two-star ban, the white light ball flies much faster than the blue light ball, and it is very slippery. Xu Yang almost didn't catch it with just grabbing it.

Cai Guang grabbed the white light ball back with his big hand. Xu Yang looked through the light ball and looked at the treasure inside, but frowned slightly.

Among this white light ball, there is only a small transparent crystal, which looks like a piece of fragments cracked and has irregular shapes.

"What is this?" Xu Yang asked, "It seems to be just a defective product."

"Xiao Xuanzi, don't underestimate it! If it is intact, this crystal will never be in the two-star ban, at least at the four-star ban level," the bronze plate smiled and said, "So, you've made a lot of money." (To be continued, please search for Astronomy, novels are better, updated and faster!
Chapter completed!