"Don't worry, I've promoted so many disciples in the Cheng family, can I still make a mistake here?" Cheng Yu said with certainty.

"Okay, let's go in with you!" Qing Yuanzi nodded, and let Xinhe and them go in together!

When everyone was ready, Cheng Yu told Qing Yuanzi how to activate the formation, only to see Qing Yuanzi walk in front of the formation and input the aura into a small spirit crystal outside the formation.

The formation suddenly lit up, and everyone was shrouded in the formation!

"This process can be a bit long, and the higher the realm, the longer it will take to break through. I estimate that it will take them at least five days to complete the breakthrough!" Cheng Yu explained.

"In that case, then let's wait here for five days!" Kiyomotoko said.

After all, these are the future of Wuji Palace, and there is no room for loss, so it's better to stay and watch it be safe!

————————————————————

As time passed, the state of these disciples seemed to be stable, and Qing Yuanzi gradually felt relieved.

"Xiao Yu, where are you going to go to practice this time?" Qing Yuanzi asked.

Cheng Yu is indeed a talent in Wuji Palace, not to mention, his relationship with his daughter, Cheng Yu is also his quasi-son-in-law, so whether it is public or private, he doesn't want Cheng Yu to have an accident.

"Actually, I don't have any direction, you know, the Yin-Yang Mirror is not missing, but I have to find them!" Cheng Yu said helplessly.

"In this matter, we old guys can't help you, we can only depend on your own chance!" Qing Yuanzi sighed, shook his head and said.

"What you just said about the Yin-Yang Mirror refers to the Yin-Yang Mirror in the Open Heaven Mirror?" But at this time, the Taixuan Daoist suddenly spoke.

"Uncle Shi, do you know about the Open Heaven Mirror?" Qingxuzi said in surprise.

The Open Heaven Mirror has seven components, and if it weren't for Cheng Yu finding the Five Elements Mirror, even he wouldn't know. But listening to what Uncle Shi said just now, he seemed to know about it.

"As far as I know, the Open Heaven Mirror is not a simple magic weapon, it has a total of seven parts, which are composed of seven immortal-level mirrors of gold, wood, water, fire, and earth, and Yin and Yang!

"Uncle Taishi, have you ever seen the Open Heaven Mirror?" Hearing the words of the Taixuan Daoist, Cheng Yu was suddenly excited.

I'm afraid there are not many people in this world who know that the Open Heaven Mirror is a combination magic weapon, but he knows it, which means that he must have seen it somewhere.

"I haven't seen the real Open Heaven Mirror, but I have seen the mural of the Open Heaven Mirror in the ruins of the Dead Forest! It clearly records that the Open Heaven Mirror has seven components, each part is an independent immortal weapon, and the power is quite amazing.

Especially after the seven immortal weapons formed the Open Heaven Mirror, they had the ability to break through the void, and even immortals could easily kill them!" Taixuan Daoist recalled.

"Death Forest?Uncle Ancestor, shouldn't this Open Heaven Mirror be the Immortal Ruins in the Mirror?, how do you say that you saw it in the Death Forest?" Qing Yuanzi asked suspiciously.

"That's right! It's the Forest of Death, not the Immortal Ruins in the Mirror! Actually, the Forest of Death is not as simple as everyone thinks, if I'm not mistaken, it should have been a very prosperous giant city.

But for some unknown reason, it seems that it has been devastated. The Taixuan Daoist seemed to remember the experience of breaking into the Forest of Death when he was young, and spoke slowly.

Qing Xuzi and Qing Yuanzi were very shocked when they heard it, but the more Cheng Yu listened, the more strange it became.

He had entered the Five Great Temples, but the Taixuan Dao people should not have entered the Five Great Temples, because he had to have the keys to the Five Great Temples.

Since the Taixuan Daoist had never entered the Five Great Temples, how did he know about these things? Could it be that there were other temples that he hadn't discovered?

However, judging from his knowledge of the Holy City, there were only five temples in the entire Holy City.

Also, why did this Open Heaven Mirror appear in the Holy City? Could it be said that this Open Heaven Mirror was once also the magic weapon of the Holy City?

"Why did this Open Heaven Mirror leave a relic in the Forest of Death?" asked Qing Yuanzi curiously.

"I don't know about this, but I'm sure that this Open Heaven Mirror has a close relationship with Death Sensen!" said Taixuan Daoren.

"Xiao Yu, you once got the treasure of the Death Forest, have you found anything that Uncle Taishi discovered?" Qing Xuzi looked at Cheng Yu, who had been pondering, and asked.

"No, I only know that it was indeed a very prosperous and magnificent giant city at one time, but I didn't find the Heaven Opening Mirror mentioned by Uncle Taishi just now. I'm also curious, where did Uncle Tai find this?

Could it be that Uncle Taishi discovered these secrets, but did not find the treasures of the Death Forest?" asked Cheng Yu.

"You actually got the treasure of the Death Forest?" Taixuan Daoist did not answer Cheng Yu's words, but was shocked by what Qing Xuzi said.

This kid actually got the treasures of the Death Forest, and although he found these ruins when he was young, he didn't get the treasures of the Death Forest, which is also something he has always regretted.

But I didn't expect that a few years later, it would be obtained by the juniors of their Wuji Palace, maybe this can be regarded as a kind of fate. Now he finally understands why this kid has such a low cultivation level and has the best Horcrux, and nine times out of ten he got it from it.

"Hehe, accident, accident!" Cheng Yu smiled, he didn't want to mention too much about the Death Forest.

Because a lot of the things involved in this seemed to have something to do with him, and he even seemed to believe a little that he was really the Holy City bloodline.

However, he couldn't let others know all this, as the Taixuan Daoist said just now, there had been a devastating blow there.

Until he figured out the reason for the destruction of the Holy City, he would never let people know that he was the bloodline of the Holy City.

"Whether it's an accident or not, it's your own fate after all!" said Taixuan Daoren.

"Then Uncle Taishi still said where is the place where you found the ruins of the Open Heaven Mirror, right? Maybe I can go inside again this time, and maybe I can find the whereabouts of the Yin-Yang Mirror?" Cheng Yu said with a smile.

"This is for you! Maybe it really helps you!" I saw that the Taixuan Daoist suddenly threw a silk cloth to him.

"Map, is this the map of the Forest of Death?" Cheng Yu opened the cloth and saw that it was a map.

"That's right, this is the map I drew when I entered the Forest of Death, and the red mark on it is where the ruins I found are, if you are interested, you can follow my map to go in and have a look!"