No rule can be easily understood, let alone refined, which is why the number of people in the Mahayana period is so small.

When many people cultivate to reach the Nine Heavens, they feel confused when they face the rules of the Heavenly Dao, and they don't understand which rule they want to master, everyone wants to master a powerful rule, and no one wants to master a simple rule.

Just imagine, the rules of heaven mastered by others are all devastating, such as not being able to act in the field, not being able to fly, and if you master the simple rules of "flowers blooming and falling", then fighting with others, in the field where you cast, all the plants bloom and fall are controlled by you, except for fun, there is no aggression at all, how to fight with people?

All cultivators of the Nine Heavens of the Tribulation Period understand that people's energy is limited, so when choosing rules, they will combine their best abilities to find the rules of the Heavenly Dao that are in line with their abilities, and only the rules of the Heavenly Dao that are related to them can be refined into their own domain abilities.

No one will casually choose a simple "flowers bloom and fall" or "eggs will break when they hit stones" as their domain capabilities.

Chance, understanding, and choice, these three are very important and indispensable.

"After mastering one rule, it is basically impossible to comprehend the second one, which is also a rule of the Heavenly Dao that restricts the Mahayana period, no wonder everyone only has one domain ability!"

At first, he was still wondering why immortal people such as the White Ape Demon King didn't use their long lives to master a few more additional rules, and after he gradually came into contact with the rules of the Heavenly Dao, he realized that the cultivators of the Mahayana period were also restricted by more powerful rules, making them unable to realm multiple fields.

"I'm an exception, right?"

Mu Yu thought to himself, life is full of surprises, and his existence is like breaking the rule that he can only have one domain ability in the Mahayana period, because he can already use the "blink of an eye of life and death", but he can comprehend another rule, which is completely different from others.

But Mu Yu was not complacent, because he was thinking that his existence was also under the rules of the Heavenly Dao, so would the Heavenly Dao use other rules to restrict him?

"I want to master all the rules, unless I'm Heavenly Dao, but this seems unlikely, I can't even master a small rule of Heavenly Dao, so why should I think about that?"

Mu Yu simply lay down, wandering aimlessly in the rules set by the Heavenly Dao, and experienced them one by one.

He himself saw many familiar rules of heaven, such as "the wind can blow leaves into the sky", "water flows from high to low", and "mortals must eat food to live", and "shouting in a mountain stream will have a magical echo".

These common and familiar rules would not be mastered by any cultivator who had crossed the Nine Heavens, because such rules were completely useless to them, and had no meaning.

Cultivators of the Nine Heavens will try their best to master the rules of great lethality, such as being the most powerful in their own domain, or the fastest, or the spiritual power is only controlled by themselves and cannot be used by others.

Or like the blink of an eye of life and death, the rule of "if you are swept by black light, you will die, and if you are swept by white light, you can be resurrected".

But the more powerful the domain ability, the more restrictions will be on the use, because the domain ability is also bound to more powerful rules, just like "life and death in the blink of an eye" Although it is powerful, but the speed of the shot is extremely slow, in the same realm, it is not easy to hit the opponent, and the same Mahayana period can basically avoid the speed of white light and black light.

Powerful but not easy to hit opponents, this is another rule that limits the "blink of an eye".

Another example is Daddy Deadwood's "Desperate Life", anything can be eroded by the poisonous mist, but it just can't have an impact on people with Mu Yu's physique, not only for Mu Yu, I'm afraid it is ineffective for all Mu Youmeng, which is also a rule that restricts "No Life in a Desperate Situation".

Another example is the Kraken King's "My Lord Ups and Downs" is so powerful that people can't move freely in it, but the "Ten Thousand Laws Return to the Original" of the Xuanji Zi Zhenren can invalidate the Kraken King's "My Lord Ups and Downs", which is the rule that restricts "My Lord Ups and Downs".

Mu Yu can imagine that the domain ability mastered by any Mahayana cultivator will be limited by other rules, and the rules that limit the ability of a certain domain are the weakness of that domain ability.

"Last time, I relied on my deduction ability to discover the weakness of the 'Seven Absolute Immortal Realm' of the Imperial Envoy's domain ability, which means that I also inadvertently used some rules to restrain the Seven Absolute Immortal, which is really a magical process. ”

Mu Yu pondered, since he has a strong deduction ability and his brain is a little smarter than others, does that also mean that the deduction ability can also become a rule?

If the ability to deduce is a rule, then how is it manifested?

"Is it really useless if I try to deduce simple rules?"

Mu Yu deduced some simple rules in his mind, such as "blowing a breath can blow the dust off", the simpler the rule, the easier it is to master, but from ancient times to the present, no one will refine this rule for their own use, because blowing off the dust This kind of rule does not need to wait until the time of the Nine Heavens to master, and it can already be mastered when he is a child.

But what if you amplify this rule to "blow on anything, including any spell that comes your way", for example, "blow on anything"?

"Then it's not a simple category, it's a rather difficult rule to master. ”

Mu Yu's eyes suddenly lit up, because he understood a law, no rule exists alone, it must be from shallow to deep, from simple to complex, that is, no matter how simple the rule is, it can be developed to a very profound level, and no matter how complex the rules are, they are actually transformed from simple.

"If we take the realm of "Desperate Situation" as an example, the poisonous mist can only erode the spiritual power of cultivators in the Qi cultivation period at the beginning, and then it can erode the spiritual power of cultivators in the foundation building stage, and then the Jindan stage...... The deepening of one realm after another, to this day, can erode the spiritual power of cultivators in the Mahayana period, which shows that when Daddy mastered this realm at the beginning, he did not achieve it overnight, but from simplicity to depth, this is the way to master the rules of the Heavenly Dao!"

Mu Yu smiled, he finally figured out how to refine the rules of the Heavenly Dao, that is to say, if you want to master the advanced domain rules, you must start with a simple one. And the simple rule of "flowers blooming and falling" of "let a flower bloom and wither at any time at any time" is afraid that when it reaches a profound realm, it will be transformed into "life and death in the blink of an eye"!

"So it's unrealistic to be ambitious, everything has to start from simple, it's really straightforward and profound. After I understand this truth, everyone should know how to master the powerful Heavenly Dao rules, right?"

Ki Yu thinks this should be common sense.

But in fact he was wrong, and this is not common sense. Not everyone sees it this way, everyone's comprehension of the rules of the Heavenly Dao is not the same, and few people will choose the refining method from simple to deep.

Anyone who cultivates after reaching the Nine Heavens of Tribulation will definitely choose to master the powerful Heavenly Dao rules directly, and will not focus on the simple rule of "flowers blooming and falling" that makes people feel that they are chicken. Those powerful Heavenly Dao rules must be mastered according to their own situation and certain chances, which is very difficult, but everyone will not hesitate to spend a huge amount of time to comprehend.

Many cultivators who have crossed the Nine Heavens may take a year, ten years, or even fifty years to master a rule, and even more so, they will be trapped in this realm for the rest of their lives and unable to break through.

Even Deadwood didn't start with simplicity, but directly chose to refine the complicated rules of the Heavenly Dao, but Deadwood had a very deep understanding of the Poison Dao and was extremely talented, so the realm he realized was quite powerful, and it only took a year.

But Mu Yu thinks that many things can actually be mastered from childhood to adulthood, and any rules are intertwined, so there is nothing wrong with being familiar with the rules of "flowers blooming and falling".

Those who have the same idea as Mu Yu are only Sword Shadow Dusty Wind!

"Master said before that life is full of cultivation, growing vegetables and cooking, bowing to everything, and every little thing deserves attention. ”

He slowly deduced the rules that were so simple that they were outrageous, pondering the rule that "blunt iron sharpens to chop wood", and the rule that "water can extinguish fire", even if even the rule that "the ripples caused by the fall of stones falling into the calm surface of the lake are in the shape of a circle".

It wasn't like he was refining the rules of the Heavenly Dao, it was more like he was experiencing life, observing the world, the world was made up of countless rules, and observing these rules made him feel very pleasant, and the simpler the rules, the less difficult it was to deduce, so he was happy to deduce them.

There are many common simple rules in the world, Mu Yu wanders in them, he only deduces the principle of one rule, but does not refine, but continues to deduce other rules, and soon his understanding of the rules has become deeper and deeper, and he can even know that when a rule is slightly changed, it will become another rule.

Gradually, his heart gradually became clearer, and suddenly he seemed to understand what the rules of the Heavenly Dao that were related to him were, he was slowly looking for that feeling, to touch the unreachable Heavenly Dao, and he seemed to have found some guidance in the dazzling array of Heavenly Dao rules......

"If deduction can also be a rule, can I do the same?" Mu Yu muttered to himself thoughtfully, as if he understood what the rules he was about to master were.