Too many secrets were hidden in the Eternal Emperor Tomb.

When battling the mirror-image Wu Yu, Wu Yu was constantly mulling over what's behind the Eternal Emperor Tomb. However, from the information he had obtained thus far, he still couldn't deduce anything useful.

He only knew if the Eternal Emperor Tomb truly forbade any living creature from entering, he would have long died in this place.

Therefore, there's a path to survival. Or perhaps the intention was to let someone in. As for the exact objective, Wu Yu wouldn't know.

Wu Yu was nearing the truth and approaching the back hall of the Graveguarding Palace. Yet, he was impeded by this room that was filled with mirrors.

Three full years had passed and Wu Yu's mental state became numb and his physical body was beyond fatigue. Up to now, he still hadn't find a way to defeat the mirror-image Wu Yu and he's getting more and more restless.

He felt he might have fallen into a trap. However, if this was a trap, why would the other party have to go through such lengths?

Judging from the capabilities of the one who created the Eternal Emperor Tomb, a simple immortal design would have taken Wu Yu's life.

Therefore, there must be something concealed.

Or perhaps this room was a form of trial. Based on a conjecture he had, he realized he had been through several challenges. If this room was also part of it, would the objective be defeating his own mirror image?

It was just that mirror Wu Yu was the same as Wu Yu and could use identical techniques. Furthermore, he could rely on the mirrors to move at will. It would almost be impossible to defeat an opponent like this. 

However, Wu Yu had resisted for three years. During the three years, he had been enduring passively and was getting tired mentally. As the exhaustion continued endlessly, both parties were locked in a standstill, or rather, Wu Yu was gradually at a disadvantage.

"If I continued with this mentality, I would definitely be defeated by the mirror-image Wu Yu. If that happened, no one knows what will happen. Most likely, I'll die in this place!" Wu Yu was anxious.

He suddenly recalled his experiences since he was in the mortal domain. In these experiences, many incidences started off as seemingly impossible. However, he always successfully completed them.

The most horrifying was going against Yan Huang Ancient Emperor. Yan Huang Ancient Emperor was an immortal that had been in the sky palaces for a long time. He possessed remarkable abilities and even a million Wu Yu wouldn't be a match for him then. 

However, through hardwork and enduring silently for years, he eventually eliminated Yan Huang Ancient Emperor and reclaimed his body. In the end, he even fused with his Heaven Devouring Avatar that gave him the successes he enjoyed today.

Recalling how he endured humiliation and persevered forward, he found himself to be a little too fragile now.

"Isn't that just a mirror-image? Even if he is the same as me, it's still a bogus! There's definitely a way to deal with it!" A glimmer of hope lit up in Wu Yu!

His eyes brightened and the frustration he felt from the endless exhaustive attacks from mirror-image Wu Yu vanished without a trace.

At this point, Wu Yu finally realized this room seemed to be leading him mentally, inculcating the belief that he couldn't defeat his opponent. However, through his determination and after struggling for three years, he finally broke free from the mental disturbances.

"This is the feeling! There's nothing I fear in battle and I'll be victorious in all!" A conviction gleaned in the eyes of Wu Yu.

He stared at the mirror-image Wu Yu who was still trying to exhaust him. Now, the other party looked different. However, the main change was in Wu Yu's mentality.

Previously, he was affected by the mental disturbances of this space. As a result, he became restless and almost lost his will after just three years.

Fortunately, he woke up at the critical juncture and found back the resilient mental state he had in the past.

Although the mirror-image Wu Yu knew every technique and trick of him, Wu Yu was no longer afraid of him.

"Since he had the same tricks as me, let me see if I can find any weakness in my Mystiques and heavenly rules!" Previously, Wu Yu didn't had this in mind and was simply going head-on against the other party.

Now and moving forward, he planned to observe as he battled.

Mirror-image Wu Yu could use all the tricks he had. In a battle like this, it would be easier for Wu Yu to identify the weaknesses that might be in his own Mystiques or heavenly rules.

If there were really weaknesses, or perhaps openings, in his Mystiques, wouldn't he become stronger once he rectified the weaknesses and openings?

And judging from the current situation, once he could correct the weaknesses in his Mystiques and strengthen them, he should be successful in suprressing the mirror-image Wu Yu and eventually gaining the victory.

Having the objective in mind, Wu Yu pulled himself together to battle the mirror-image Wu Yu again.

At this point, he was physically drained. However, these conditions tensed his mental states, raising his focus to 100%.

No matter what techniques the other party used, he was always able to identify the movements. After, he could observe if there's weakness in the heavenly rule power unleashed. If there was weakness or opening, how could he exploit them. 

Soon, Wu Yu realized he hadn't used his Mystiques and heavenly rules appropriately.

No matter if it was the first heavenly rule of incandescent heavenly rule or the sixth heavenly rule of chronowarp heavenly rule, he hadn't been using them perfectly.

Under close observation, the mirror-image Wu Yu unleashed various techniques against Wu Yu. Wu Yu could identify some minor weaknesses once in a while. As time passed and as the battle progressed, he started finding more and more weaknesses.

The weaknesses of the other party were also the weaknesses of Wu Yu!

After identifying the weaknesses, Wu Yu started altering his Mystiques and heavenly rules. Obviously, he didn't use them immediately. This was because Wu Yu was worried once he started using improved techniques, the other party would also mimic him.

If he wanted to defeat his opponent, he had to improve his Mystiques and heavenly rules to the point where he couldn't do so further and eliminated all minor weaknesses.

This required a long time to build. At least for now, Wu Yu could identify minor weaknesses in his Mystiques and heavenly rules once every few days. As long as he altered them slightly, the might would be enhanced extensively.

"If this persists, my strength would at least double once I perfected my Mystiques and heavenly rules!" Wu Yu was adamant about his objective and exhilarated.

In the first three years, he was negatively affected by the mental disturbances, making him feel demoralized. He felt defeated and almost succumbed to the negative emotions that would left him trapped and killed in this place.

However, he had changed his battle mentality. Through observing the other party in battle, watching his own Mystiques and heavenly rules, he was able to find ways to improve himself.

It's impossible for Wu Yu to go a step further to 7-heavens immortal king when he's battling constantly.

Moreover, once he achieved a breakthrough, the commotion would be too great. The mirror-image Wu Yu would likely follow with a breakthrough too.

Therefore, the best chance of winning for Wu Yu would be to accumulate experience in battle, finding the weaknesses of his Mystiques and heavenly rules, improving them and eventually unleashe twice the amount of strength once he could internalize the improvements.

Only then could Wu Yu possibly defeat the mirror-image Wu Yu that was identical to him!

The main weaknesses when casting Mystiques and heavenly rules were in the imperfect ways of unleashing his strength and also the less than perfect mastery over his Mystiques and heavenly rules. As a result, he couldn't bring forth the full might.

Through constant battles with mirror-image Wu Yu, his control over his powers became more precise and adept. However, Wu Yu concealed these for now.

In battle, what Wu Yu had shown was the techniques before he made corrections. Therefore, he was still evenly matched against mirror-image Wu Yu.

This process was arduous mainly because Wu Yu's physical body was pushed to breaking point after three years. In this state, Wu Yu had the uphill task to still focus on finding weaknesses while battling.

If he didn't have a determined mind and had not persevered when he felt he couldn't go on, he would probably have collapsed.

In the Floating Dreams Pagoda, Wu Jun and others were aware of Wu Yu's conditions.

"Old Wu is really pushing his limits! It's too difficult in his current condition. He's close to his limits now!" This wasn't the first time Full Moon of Nanshan was moved by Wu Yu. He felt Wu Yu's determination was steel-like and nothing could move it.

Defeating Wu Yu wasn't difficult. However, there seemed to be nothing in this world that could crush Wu Yu's will.

"Big brother Wu Yu would definitely succeed. He just have to persevere a little longer." Ye Xixi's beautiful eyes stared wide opened with confidence. She had always believed that Wu Yu would always succeed regardless of the circumstances.

It was especially so after going through the predicament in the secret chamber.

If Wu Yu could breakthrough the restrictions under such desperate conditions, what else would be too difficult for him?

Wu Jun didn't speak a word but he was impressed by Wu Yu. He would admit honestly if he was in the same environment as Wu Yu, he definitely wouldn't last three years before his will collapsed completely.

As for Wu Yu, he's getting more relentless as time passed.

In the process of battling and learning, Wu Yu's control over his Mystiques and heavenly rules became even better. Although he didn't show it, he could feel once he unleashed them, the battle strength would be more than twice as powerful.

Years passed one after another. To be absolutley certain, Wu Yu endured the torment physically and mentally, pushing his limits further in battle.

Finally, on the tenth year of him entering the mirror space, he felt his control over his Mystiques and heavenly rules had reached perfection. Continuing the battle against mirror-image Wu Yu wouldn't bring him further improvements.

"It's time to end this!" His eyes gleaned in unwavering determination. Although he was fatigued, his desire for victory raged more furiously.