There are not many varieties of spiritual plants on the jade book, there are about 50 kinds of third-grade ones, and there are more than half of them of the fourth-grade ones, only more than 20 kinds.

However, they are all relatively rare and rare varieties in the cultivation world, so they can only be exchanged with sword seals.

Lu Xuan roughly scanned it and found that the cultivation difficulty of the third-grade and fourth-grade spirit plants was much higher than that of the first-grade and second-grade spirit plants.

There are various conditions that need to be met, just for the aura, for the concentration of aura, the purity requirement is not a level, and even many spiritual plants also need a special spiritual energy environment.

In addition, there are strange conditions in terms of spiritual soil, cultivation methods, etc.

"Senior Brother Lu, are you going to plant the Four-Rank Spirit Plant?"

The old peasant monk standing on the side saw that Lu Xuan's gaze had been fixed on the jade book about the four-grade spiritual plant, and asked a little incredulously.

"Just look, with my current attainments on the way to the spirit plant, I can't cultivate a four-grade spirit plant."

"So it's just a matter of making preparations first, and slowly accumulating to meet the conditions for cultivating the Four-Rank Spirit Plant."

Lu Xuan said casually.

There are more than 20 kinds of four-grade spirit plants on the jade book, and some of the patterns are in a dim state, which means that although the Si Nong Hall can condense the corresponding spirit seeds, it will take a certain amount of time, and the corresponding four-grade spirit seeds cannot be provided immediately.

"Four Grades of Fire Heart Lotus ......"

On the jade book, a fiery red lotus slowly rotates, the lotus rhizome is pale red, as if composed of countless irregular red crystals, the leaves are fiery red, and there seems to be red magma flowing slowly in the leaf veins.

"It is very difficult to cultivate this place of fire lotus, it is said that it must be planted in the extremely hot magma, and in addition, there are other planting conditions, even if it is Uncle Zhuji, it is not easy to plant successfully."

The old peasant monk told Lu Xuan about the Earth Fire Heart Lotus and the information he controlled.

"Thank you, senior brother, for reminding me."

After hearing that it needed to be planted in the red-hot magma, Lu Xuan's interest suddenly decreased by more than half, and with the current conditions of his cave mansion, it was not enough to meet the growth requirements of the Earth Fire Heart Lotus.

He continued to scroll down, his gaze resting on a strange-looking spirit plant.

At first glance, Lingzhi seems to be made up of the bodies of many strange insects, grotesque and harmonious, with a strange beauty.

"This is the Xuan Insect Vine, the four-grade spirit plant, which seems to have a lot to do with all kinds of demonic insects, and I don't know the specifics."

The old peasant monk continued.

Lu Xuan nodded, flipped through it from the beginning to the end, and gradually eliminated those bright patterns.

"The cave environment is still not enough, and the growth conditions of most four-grade spirit plants cannot be met."

Lu Xuan thought in his heart, and his eyes converged on the strangely shaped Xuan Worm vine.

"Only this insect vine seems to be easier to plant, I have the "Worm Sutra" in my hand, and I have a deeper understanding of demon insects, and I can cultivate the corresponding insects according to the needs of the insect vine."

Although the shape of the Xuan Worm Vine is a little weird, if it is compared to the thorn bones in Jianmen Town, the hundred pupils and the mysterious wood of the underworld, it is nothing.

Thinking of this, he no longer hesitated, and pointed to the pattern floating above the jade book.

"Senior brother, how many sword marks do you need for this Xuan Worm Vine?"

"Senior Brother Lu has thought it through? The cultivation conditions of this insect vine can be said to be very complicated. ”

The old peasant monk kindly reminded.

"It's okay, I can slowly explore and experiment, and as for the demon insects or something, I can also collect them little by little."

Lu Xuan said with a smile, his tone was indifferent, and he didn't seem to plan to plant the Xuan Worm Vine immediately.

"If you are a four-grade spirit seed, there are not a few sword marks that are needed."

"The Mysterious Insect Vine Spirit Seed needs two hundred and forty sword marks."

The old peasant monk replied.

"It's a little expensive......"

Lu Xuan secretly sighed in his heart, he remembered that when he exchanged for the third-grade sword gourd spirit seed, he spent ninety sword seals, and now these four-grade sword worm vine spirit seeds actually needed more than two hundred sword seals.

However, he also knew that the spirit seeds in the sect were already internal prices, and although he was reluctant, he still honestly took out a sufficient number of sword seals and handed them to the old peasant monk.

"I can only wait for it to mature, and then open a good light group reward."

The rewards of the second-grade sword grass, the dark marrow mushroom, and the Qingmiao spirit tea are already quite good, and the fourth-grade Xuanworm vine naturally makes Lu Xuan look forward to it even more.

"Senior Brother Lu, take it carefully."

Seeing that Lu Xuan insisted on exchanging the Xuan Insect Vine Spirit Seed, the old peasant monk did not dissuade him much, and quickly took out a delicate wooden box from the inner hall.

Lu Xuan opened the wooden box and saw that there was a dry spirit seed the size of an egg inside.

The surface of the spirit seed is uneven, and the colors and shapes of each part are different, like a mixture of many insect eggs, and you can feel the rich vitality inside.

"Thank you, brother."

Lu Xuan put the Mysterious Insect Vine Spirit Seed into the storage bag and thanked the old peasant monk and said goodbye.

Back in the cave, the spirit crane carrying Lu Xuan still refused, resolutely not wanting Lu Xuan to pay the reward, but Lu Xuan was stubborn and had to give up.

"It seems that those spirit cranes have reached a consensus, and they can prostitute to the end in the future."

Lu Xuan couldn't help but smile, opened the formation, and after the white mist dissipated, he pushed open the courtyard door.

The wind falcon chicks and the cloud-treading lynx are still warmly welcomed.

Lu Xuan played with Er Xiao for a while, then came to the spiritual field and couldn't wait to take out the wooden box.

He found a blank area and cast a ground induction technique, and in an instant, the spiritual soil quietly changed, and a round hole slightly larger than an egg appeared on the ground.

He took out the Worm Vine and put it into the round hole.

Immediately, he controlled the spiritual soil and buried the Xuan Worm Vine Spirit Seed in the spiritual soil just right.

The mind is condensed on the spirit seed of the insect vine in the spiritual soil.

In an instant, a thought crossed his mind.

[Xuan Insect Vine, a four-grade spiritual plant, after maturity, it can increase the probability of the demon insect being promoted to the fifth grade, and it can also refine some specific high-grade elixirs. 】

[When raised, it is in a state of symbiosis with certain insects.] The insect pig is attached to the insect vine to provide nutrients for the growth of the insect vine, and the insect vine secretes special spiritual substances to promote the growth of the demon insect. 】

[When the demon insect matures, it breaks free from the body of the insect vine, and the body remains on the insect vine and becomes a part of the spirit plant. 】

[Fuji Fuji, I'm the favorite little bug.] 】

"It seems that we need to find some demon insects that can molt, put the eggs on the insect vine and hatch them, and let them grow together."

"There are still many such demon insects, such as cicadas, praying mantises, locusts, etc., and there are also many records of related demon insects in the "Insect Classic".

"Demon insects and Xuan insect vines grow together, doesn't that mean that I don't need to raise demon insects much? When they grow and mature, they can directly get the light group reward? ”

Lu Xuan had a whim, but he didn't expect that choosing this Xuan Worm Vine would have such a special effect.

Now he doesn't have the corresponding insect eggs on his body, so he can only use the spiritual rain technique to maintain the vitality of the Xuan Worm Vine Spirit Seed.

If you want to promote growth, you need to parasitize the eggs on the spirit seed so that they can grow together.

(End of chapter)