In fact, Chu Chen had already wanted to come back in the past two days, but he wanted to accompany Yang Xue more, they had a gap of almost two years, and they needed time to learn more.

Another thing, Xiang Ming told Chu Chen that the biological research institute acquired last time had been moved to Baoqing, and the office building had been arranged, so he could be put into research at any time, so when Chu Chen came back this time, he also needed to find a few elixirs to study well in the research institute to see if the research could be successful.

Chu Chen quickly arrived in the mountain, entered the magic circle, and then sat down cross-legged on the spot to cultivate, until an hour later, he grew up, and now his cultivation is already the peak of the fourth layer of condensation, only one trace is close to breaking through the fifth layer of condensation, but, because the spiritual energy is not enough, he has not been able to break through, and now this hour of cultivation has only made the spiritual power in his body a little more, but the fifth layer still can't break through, just now he tried to impact the fifth layer, but the stamina is insufficient, and finally failed.

"If you want to break through, you can't cultivate in the magic circle for at least more than a month, you have to let the magic circle accumulate spiritual energy, and you also need the assistance of elixir, otherwise you can't break through. Chu Chen secretly calculated, at most, there will be more than a month, all the elixirs in the magic circle will mature, and when the time comes, he believes that not only can he break through the fifth layer, but he can also break through even if it is the sixth layer of condensation, but he does not have the sixth layer of the mental magic formula......

Ten minutes later, Chu Chen walked out of the circle with the elixir.

This time, Chu Chen brought out a total of three elixirs, Zhu Guo Cao, Jinglin Cao, and Dragon Cordata, this Zhu Guo Cao was given to Du Lao Er, as for Jing Lin Cao and Dragon Cordata, they were brought to the research institute, these two herbs have a lot in the magic circle, and they stay in the magic circle for the shortest time, so there is nothing distressing to take out a few plants from the magic circle.

The medicinal effects of Zhuguo grass and dragon cordata are not much different for monks and warriors, but there are some differences for ordinary people. The Zhu Guo in the magic circle has not yet matured, although a few more plants have grown on their own, but even if they are all taken out, it is estimated that it will not be enough for Du Yicheng's brothers who are friends of life and death to break through, so Chu Chen took some more dragon cordata and let it be mixed with Zhu Guo grass for them to eat.

Getting in the car, Chu Chen left the village and went straight to Baoqing.

Almost an hour later, Chu Chen came to the Royal One, and half an hour ago, Du Yicheng called Chu Chen, saying that they had arrived at the Royal One.

When Chu Chen got out of the car, Du Yicheng and the others were waiting for him at the door, and respectfully welcomed him in, while Sun Gui drove to the research institute and sent the remaining Jinglin grass and dragon cordata over, and he had already called Xiang Ming just now and asked him to go to the research institute to receive the spirit grass.

After entering the Royal One, Chu Chen and the others went straight to the office.

Chu Chen sat straight on the sofa, Du Yicheng and the others stood on either side of him, looking at Chu Chen one by one with eyes full of excitement, today, is the time for them to become real martial artists!

After Chu Chen sat down, he took out Zhu Guo Cao and Dragon Cordata from the schoolbag on his body, this time, Chu Chen brought three Zhu Guo Cao and nine Dragon Cordata plants, and then made a mixture, and soon, nine elixirs appeared in front of everyone.

"Teacher, is this okay?" Seeing that Chu Chen just put two ordinary grasses together, he immediately frowned, last time he didn't eat these things, it seemed that there was only one kind of thing, and it was still a leaf, and what Chu Chen gave today turned out to be a whole bead.

"That's it. Chu Chen bowed his head, then looked at the second and third children in front of him and said, "Before that, I need you to swear an oath and never betray me!"

"The sky is above, I, Du Qing, will obey Chu Chen's orders from today onwards, be loyal to Chu Chen, if there is the slightest betrayal, the whole family will not die well!" Du Lao Er knelt on the ground with a "poof", raised his hand and swore with a sincere attitude.

Chu Chen nodded with satisfaction, and then pushed the elixir prepared in front of him aside, Du Qing didn't say a word, picked up the elixir, and ate it in one bite. It's just that when I chew it, I feel that something is not right.

"H'outtuynia cordata has a spicy taste, but its medicinal power is extremely strong. Chu Chen explained slowly beside him.

Du Qing had a bitter face, and he was so domineering that he chewed the elixir and swallowed it.

"Run the mental method you have learned and start breaking through. Chu Chen saw that Du Qing had already swallowed the elixir, so he immediately ordered.

Du Qing nodded, walked to the corner and sat down cross-legged, and began to operate the mental method he had learned, but after only three or four minutes, white smoke began to rise above Du Qing's head, and his face gradually turned red, as if it was cooked Jiwei shrimp.

"Ahh

When Chu Chen was refining Du Qing's medicinal power, he carefully observed him with his divine sense, so now he was clear about what was going on in Du Qing's body.

When the other people around saw this scene, their faces changed slightly, and they sweated for Du Qing, and at the same time, they also hoped that he could break through and succeed and embark on the real martial arts!

As time passed, Du Qing's breathing sound was like pulling a bellows, and with each breath, his chest would bulge high, as if those breaths were about to burst his chest.

"Ahh

With the injection of Chu Chen's spiritual power, Du Qing suddenly only felt a cool power enter his body, making his feeling of being burned all over his body instantly alleviated a lot, and as this cool intention traveled all over his body, he could no longer feel the slightest burning sensation, and the chaotic aura all over his body also calmed down at this moment, and all the power merged into the dantian, forming a sea of qi that he could mobilize at any time.

"Breakthrough!" After Chu Chen withdrew his hand and sat down on the sofa again, Du Qing suddenly opened his eyes, revealing an extremely excited look, stood up, and slapped a potted plant next to him.

"Bang!" Silently, the potted plant one meter away from Du Qing exploded in an instant, and a small tree the size of a fist in the pot was smashed by this palm!

"Thank you teacher for your success, this kindness and virtue, I Du Qing can only swear allegiance to the death!" Du Qing took a deep breath, solemnly walked in front of Chu Chen, and kowtowed.

"Good. Chu Chen nodded slightly, and asked him to find a place to consolidate the realm.

Next, Wu Laosan stepped forward, first swore to the sky, and then after Chu Chen agreed, he took a prepared elixir, ate it immediately, and then ran the exercises, just like Du Lao Er just now, it didn't take long for white smoke to come out of his head, his face was red, and he breathed like pulling a bellows.

When it was a critical moment, Chu Chen made a move, built a foundation for them with pure spiritual power, guided the chaotic internal strength to return to the dantian, and finally ensured that they would break through smoothly.

"It seems that the combination of these two elixirs is indeed domineering enough, if it weren't for me today, they would eat these things indiscriminately, and one by one they would definitely explode and die. When the last Lao Jiu successfully broke through, Chu Chen sat on the sofa with a tired butt and helped the nine of them break through, consuming ninety percent of his spiritual power!