Liu Yu walked into the library hall, only to see that there were tall bookshelves made of agarwood in the hall, two floors up and down, one person high, divided into six areas, respectively, exercises, refiners, formations, runes, Dandao, spirit beasts, among which the exercises area covers the widest area, and is subdivided into more than ten types of communities.

"Brother Meng, this is the choice?" I saw Meng Shengming holding a green jade slip in his hand, and was about to return to the quiet room, when Liu Yu said hello.

"Hmm!" Meng Shengming clenched the green jade jade slip in his hand, nodded, and didn't say much, passing by Liu Yu, obviously not wanting to reveal which exercise he chose.

Liu Yu smiled lightly, passed by Meng Shengming, and walked directly towards the exercise area, first came to the community marked with the word "gold", this community is all gold system exercises with gold aura as the main cultivation attribute, obviously Liu Yu does not plan to continue to practice wood system exercises.

Of course, it is not because the wood system is not good, but because of his own spiritual root qualifications, the best choice he made, Liu Yu is a three-attribute spiritual root of gold, wood, and earth, and can absorb the three-attribute spiritual energy of gold, wood, and earth to practice, according to the principle of mutual growth and mutual restraint of the five attributes.

The five elements are born together: gold gives birth to water, water gives birth to wood, wood gives birth to fire, fire gives birth to earth, and earth gives birth to gold.

The five elements are mutually restrictive: gold and wood, wood and earth, earth and water, water and fire, and fire and gold.

The most suitable for Liu Yu is the gold and earth dual system of major exercises, when cultivating, you can inhale the gold aura and the earth aura at the same time into the "Purple Mansion", and these two different attributes of the aura have no relationship with each other, they can be stored in the "Purple Mansion" at the same time, and the native gold, the earth aura can also enhance the power of the golden aura.

Therefore, the most suitable for Liu Yu is the dual-system exercises of the main gold and auxiliary soil, followed by the dual-system exercises of the main earth and auxiliary gold, but the grade of the dual-system exercises is not low, and Liu Yu was just an ordinary disciple at the bottom before, so he was naturally not qualified to practice such high-level exercises.

Now that Liu Yu has the qualifications to choose a local grade intermediate major exercise, he will naturally choose a dual-system exercise, and before his master Zhang Yuanzhen came here, he had recommended two earth-grade intermediate dual-system exercises to Liu Yu.

One is the "Xuantu Yunjin Decision" of the main gold and auxiliary soil, and the other is the "Golden Evil Society Tao Sutra" of the main land and auxiliary gold.

Soon, Liu Yu found the "Xuantu Yunjin Duel" on the upper floor of a bookshelf, and there was a green jade slip in the square wooden tray, a short booklet, the short content is a general introduction to the "Xuantu Yunjin Duel", which records the basic characteristics of the "Xuantu Yunjin Duel", as well as the introduction and power of the exercises that come with the spell.

Unlike books, this green jade jade slip can only be read through spiritual sense, and the ban on this piece of green jade jade slip has not yet been lifted, and Liu Yu can't consult any of its contents at this time.

After Liu Yu carefully checked the short introduction, he did not immediately take away the piece of green jade and jade slip in the wooden tray, but went out of the gold system exercise community, came to the earth system exercise community, and spent half a pillar of incense to find another gold and earth dual system exercise "Jin Sha She Tao Sutra".

Liu Yu picked up the short story and began to understand the characteristics of this "Golden Evil Society Tao Sutra", to see how it differs from the previous "Xuantu Yunjin Duel", and to compare the advantages and disadvantages of the two exercises, so as to make a final choice.

These two major exercises, one attack and one defense, "Xuantu Yunjin Duel" main gold auxiliary soil, can refine the sharp "Xuantu Ruijin True Qi", the exercises come with spells are also offensive, such as "Sharp Earth Thorn", "Sharp Gold Knife Rain", "Xuantu Golden Blade Wind Tribulation" and so on.

The "Golden Evil Society Tao Sutra" of the main soil auxiliary gold can refine the thick "Golden Evil Earth Yuan True Qi", and the exercises come with spells that are biased towards defense, such as the Golden Yuan Thick Earth Shield, the Golden Evil Flying Rock Spear, and the Immovable Society King.

According to the comparison of the four main points of the exercises, such as realm, power, bottleneck, and meridians, the first is the realm, and the two exercises can be cultivated to the Jindan Great Perfection and impact the Lingying Realm.

Then there is the power, "Xuantu Yun Jin Duel" majored in metallic aura, in terms of single attack power, it is naturally superior, but the "Golden Evil Society Dao Sutra" is more defense-oriented, the two focus is different, who is superior and who is inferior, it is not easy to say.

There are two kinds of bottlenecks, one refers to the spatial shackles encountered in improving the size of the "Purple Mansion", and the other refers to the strength and weakness of the "Five Yang Thunder Tribulation" encountered when advancing to the next major realm, such as the Jindan realm.

The bottlenecks encountered by the two exercises are actually comparable, but the metallic true qi condensed by the "Xuantu Yunjin Decision" is more conducive to breaking through the shackles of space and expanding the size of the space of the "Purple Mansion".

However, the "Golden Earth Yuan True Qi" refined by the "Golden Sha Society Tao Sutra" is thick and condensed, and it is stronger than the "Xuantu Yun Jin Duel" when advancing to the Jindan Realm and resisting the heavenly power of the "Five Yang Thunder Tribulation".

Finally, there are the meridians, both of which use the four main meridians, the "Xuantu Yun Jin Duel" cultivates the Dan Qi vein, the Dan Yuan vein, the Dan Jing vein, the Dan life vein and the three side meridians, while the "Golden Sha Society Dao Sutra" cultivates the Dan Yuan vein, the Dan Jing vein, the Dan life vein, the Dan Yang vein and the two side meridians.

Obviously, the speed at which the "Xuantu Yunjin Duel" absorbs the aura is faster than that of the "Golden Sha Society Dao Sutra", that is to say, the cultivation speed of the "Xuantu Yunjin Duel" is faster, but it only has one more side meridian, and the cultivation speed is not much faster.

After Liu Yu pondered a pillar of incense, he finally took out the green jade slip with the "Golden Evil Society Tao Sutra" recorded on the tray, and did not choose the "Xuantu Yunjin Duel", which was the fastest cultivation speed for him.

Because the master Zhang Yuanzhen mentioned to Liu Yu that it was easier to survive the "Five Yang Thunder Tribulation" by cultivating the "Golden Evil Society Tao Sutra" than the "Xuantu Yunjin Decision". After carefully reading the introduction of the characteristics of the two exercises, Liu Yu found that this was indeed the case.

There is such a sentence in the annotation in the short booklet of the sect of the "Golden Evil Society Taoist Sutra": The master of this scripture is like the lord of the earth, controlling the land and resisting the enemy, moving mountains and stones, omnipotent, and the secret art "King of the Immovable Society" can carry the power of heaven and thunder.

After taking the green jade slip that recorded the mental method of the "Golden Evil Society Dao Sutra" in the tray, Liu Yu did not immediately return to the quiet room, but went to another spell area marked with the word "soul", this area was not as dazzling as other spell sections, full of all kinds of books, mental methods, and only a lonely row of bookshelves.

"Found it!" Liu Yu carefully looked at the names of the various spells on this row of bookshelves as he walked, and when he walked to the end of this row of bookshelves, he couldn't help but show joy, and hurriedly picked up the green jade jade slip in the tray, and the front of this tray was engraved with a line of small characters "Heavenly Master Mantra Determination Technique".

In the "Black Blood Valley", Liu Yu and his party encountered a "Yin Evil" in the foundation building period, and almost wiped out the whole team, and finally it was Wei Ping who performed this secret technique to limit the action of the "Yin Evil", and Liu Yu took action to eliminate this ghost.

Afterwards, the group was extremely curious about the secret technique performed by Wei Ping, and Wei Ping also bluntly told Liu Yu and others without any scruples that the secret technique he performed was called "Heavenly Master Mantra and Determination Technique", which was a family tradition.

It is said to be one of the top spells of the Heavenly Master Dao in ancient times, the "Nine Styles Mantra", which is extremely powerful.

It's a pity that the Wei family only has one of them, and where the ancestors of the Wei family got it, no one knows, if everyone is interested, they can go to the Zongmen Tibetan Scripture Pavilion to exchange for cultivation, the ancestors of the Wei family have already handed over the cultivation method of this type of spell to the sect.

It's just that Wei Ping also persuaded Liu Yu and others not to take this spell too seriously because of the origin of this spell, because this spell is also lethal to ghosts such as "Yin Ghost".

Liu Yu was also a little interested at first, but then quickly forgot about it, and it was not until Liu Yu waited from the "Shifeng Cave Mansion" to the "Heavenly Master Mantra - Daozun Heart Sutra" that he remembered this spell.

After returning to the sect, Liu Yu ran through the Tibetan Scripture Pavilion several times and found that this spell was not in the fourth layer of the Tibetan Scripture Pavilion, and was obviously hidden in the "Treasure Pavilion" by the sect.

So this time Liu Yu took the opportunity to find this spell, but the "Treasure Pavilion" is divided into two layers, the fifth layer and every sixth floor of the Treasure Pavilion, it is said that the fifth layer of the Treasure Pavilion is placed with exercises, heart scriptures, spells, etc.

Although Liu Yu got the opportunity to enter the "Treasure Pavilion" to select a high-level spell, it was limited to the Treasure Lord's level, if this "Heavenly Master Mantra Determination Technique" was placed on the upper level of the Treasure Pavilion by the sect, Liu Yu could only wait for the next opportunity.

Fortunately, it may be because this is just one of the "Nine Mantras", and it lacks a major practice, so it was placed on the treasure floor by the sect.

"Master, this is the main cultivation method selected by the disciple, and there is also a high-level spell selected by the sect last time when the sect rewarded the disciple for entering the Treasure Pavilion. Liu Yu returned to the quiet room and found that Meng Shengming, Li Sui and their master had left, leaving only the master Zhang Yuanzhen and the ancestor "Shangqing Zhenren", so he stepped forward quickly, put the two green jade slips on the coffee table, and said.

"The Golden Evil Society Dao Sutra, yes, it is a good match for your spiritual root qualifications. The old man picked up the first green jade jade slip, and when his spiritual sense invaded it, he smiled and said.

Then he picked up the second green jade slip, and soon said with a somewhat strange face: "Xuanyu, you really want to use this reward to exchange for this "Heavenly Master Mantra Determination Technique"?"