Returning to the medicine garden, symbolically walking around the medicine garden, Zhen Cheng hurriedly returned to Wu Xin's stone cave. After a few brief explanations, Zhen Cheng began to dig holes again.

The dark passage was dark, except for the sound of rushing water, and the silence here was terrifying. With a thickness of four or five meters from the ground, if Zhen Cheng didn't feel it, he wouldn't be able to hear what was happening above at all.

The dark passage is about one meter and a half high, Zhen Cheng has to squat and walk, and for more than a month, Zhen Cheng has spent every night like this.

Zhen Cheng had tried to calculate, and at a normal speed, he should be able to resist Yao Lao's stone cave tonight.

"Whew-whoa-" Walking to the end of the dark passage, Zhen Cheng's hands were full of true qi, and he reached out to grasp it, crushing the hard rock like pinching tofu, and with a wave of his arm, the gravel turned into powder and sprinkled one after another.

This is Zhen Cheng's daily work, which is extremely boring. But in order to learn alchemy, Zhen Cheng forced himself to do so every night.

Wu Xin had tried to inquire about the progress of the Thousand Feather Snow Alchemy Pill, and Yao Lao had recently been teaching the Thousand Feather Snow Hunger Pill refining method. It can be inferred from Yao Lao's recent happy expression that Qian Yuxue's refining of the Hunger Filling Pill is very successful, because of this, Zhen Cheng has been bold in speeding up the progress in the past three days, and Zhen Cheng can not refine the Hunger Filling Pill, but the Qi Pill, Zhen Cheng must eavesdrop on the method of alchemy.

"Squeak!" Zhen Cheng was thinking about things while habitually grabbing, and his right hand suddenly pinched on a cold cylinder, and a sound of iron being pinched flat sounded in the dark passage.

"What's that?" The slippery and greasy thing stuck to his hands, Zhen Cheng hurriedly withdrew his hands and looked at them carefully.

The hand that had just pinched the cylinder was stained with black-brown rust, and in a fist-sized cavern that had been pulled out by himself, an iron pipe the thickness of an adult's thigh was vertical.

From the rusty appearance of the iron pipe, Zhen Cheng could deduce that this thing had existed for more than a year or two.

"Hey, what's the sound!" When Zhen Cheng wanted to reach out and touch it, Yao Lao's clear voice suddenly came from the iron pipe. Zhen Cheng was so frightened that he didn't dare to take a breath, and his heart was beating wildly like a in heat.

There was a small crack in the iron pipe that Zhen Cheng had pinched, and it was from there that the sound came from. Yao Lao's puzzled voice disappeared in the blink of an eye. But Zhen Cheng knew what the iron pipe in front of him was for.

Zhen Cheng gently ripped off the sleeve of his shirt and wrapped the iron pipe that had been pinched out of the small gap by himself. Then quickly clean the rubble around the iron pipe with both hands.

Ten minutes later, an iron pipe running through the top and bottom appeared in front of Zhen Cheng like a flagpole.

"It turns out that this is how the master got in touch with Yamashita!" Zhen Cheng has never understood that Yao Lao Weishenme is so well-informed, especially, not long after what happened under the mountain, Yao Lao knew, and sometimes, Yao Lao was so well-informed that Zhen Cheng was terrified. "This iron pipe leads to the bottom of the mountain, and the people under the mountain, as long as they run the true qi and speak to the iron pipe, the medicine elder on the mountain will naturally hear it!"

Although this is not a telephone, it is the most primitive way to transmit sound. While Zhen Cheng smiled dumbly, he also admired Yao Lao's cleverness.

"Hey, hey! Hey! Zhen Cheng looked at the rusty iron pipe and smiled evilly. This way of transmitting sound has its inherent limitations. If you cut out a piece horizontally in the place where you were crushed just now, and then insert it with a stone slab, then Yao Lao will have no way to contact Yamashita.

The method will definitely work, because this simple way of blocking sound transmission is really nothing to Zhen Cheng, a high-achieving student who often scores full marks in physics exams.

Zhen Cheng thought about it for a while, and felt that this method was not perfect.

Instead of cutting off the connection between Yao Lao and Yamashita, it is better to do the opposite yourself. Put a bugging device in this iron pipe, so that Yao Lao and Yamashita secretly communicated, wouldn't he be able to grasp it in advance?

Zhen Cheng quickly made a decision and continued to dig the stone cave lightly.

"Cher, take a break! Let me tell you about some skills that you need to pay attention to when making alchemy! Because of the excitement, Zhen Cheng worked hard, and after three hours, Zhen Cheng listened carefully and heard Yao Lao's voice clearly.

"Thank you, Master, I'm not tired!" Qian Yuxue's voice was tired, needless to say, this stubborn girl must be trying to achieve something in one go.

Zhen Cheng stopped what he was doing, lay down on the broken stone powder, and listened carefully. A kind of voyeuristic pleasure enveloped Zhen Cheng, and the inexplicable excitement made Zhen Cheng experience the pleasure brought by success.

"You're very tired now, even if you correct what you did just now, you won't be able to refine the next pot of pills! Alchemy requires a person to have abundant physical strength and mental strength, and if you persist stubbornly, your physical strength may still be able to hold on, but your mental strength is not enough for you to persist until the refining of a furnace of elixir is completed. During the whole process, as long as you are slightly distracted, that furnace of elixir will become a waste pill, you know? ”

"I-" There was disappointment in Chiba Yuki's voice, but it was obvious that she was not as persistent as she had just been, and there was frustration in her tone.

"Don't be discouraged!" Yao Lao's voice rose again, and he comforted softly, "When I was refining this Qi Benefiting Pill back then, I couldn't count the number of failures! If alchemy is that simple, wouldn't everyone become an alchemist? You just saw the prescription of the Qi Pill, and today you started trying to smelt the medicinal liquid, which is fast enough! Take your time, there's a lot of time! ”

"But what about my father?"

"Silly girl! In the current Kaikabo Peak, except for a few ancestors, your status is already the highest! You can rest assured, your father's affairs, the ancestors of the mountain and others dare not slack off! ”

"However, I still want to refine the elixir as soon as possible to save my father!" Qianyuxue has a stubborn personality, and no matter who she recognizes, she can't convince anyone. "Master, Senior Brother Zhen Cheng knows how to heal, weishenme can't I ask Zhen Cheng to go to see my father?"

Since following Yao Lao Alchemy, Qian Yuxue has never left the medicine garden. Only a few people know about the destruction of a thousand mountains, and Qianyuxue still doesn't know that his father is no longer on Kaikabo Peak, but is still naïve about how to save his father.

"Can Zhen Cheng be saved, don't I know if I can?" Zhen Cheng could clearly feel that Yao Lao's voice was full of annoyance, "How many times have I told you, during the alchemy, don't talk about Zhen Cheng, why did you get involved with him again!" ”

"Old thing!" Zhen Cheng scolded in his heart, "Damn, is it embarrassing to talk about Lao Tzu?" ”

Qian Yuxue was silent, Zhen Chengdi listened to it for a long time, but he didn't hear Qian Yuxue's quibbles.

"I'm not saying that your senior brother is bad, but I don't want you to be deceived by him! Zhen Cheng first brought a Huang Yiyi back to the medicine garden, and now he has got a Wu Xin, is it possible, do you still want to be a concubine? You learn alchemy with me, this young man in the cultivation realm, who do you want to marry? weishenme wants to hang himself from a tree? ”

Yao Lao's voice rose again, patiently enlightening and advising Qianyuxue.

"Master, I'm almost rested, let's start alchemy!" Qian Yuxue didn't seem to want to dwell on Zhen Cheng's matter for too long, and her voice pleaded coldly.

"Forget it! You have been very diligent in alchemy these days, and you also need to take a break! There is less than half a month to go before the Jindan Gate Dabi, and you also need to consolidate your cultivation! From now on, you are in retreat! Wait until the Jindan Gate is bigger, and you will go out again! ”

"Master, I-"

"Disobedient, isn't it?"

"Yes! Master! Qian Yuxue's voice was full of grievances, but when she heard that Yao Lao was angry, she didn't dare to insist anymore, "Then I'll go out!" ”

Zhen Cheng could vaguely hear the sound of Qianyu Xue's clothes rubbing, and a few seconds later, Zhen Cheng heard Yao Lao's snorting panting.

Needless to say, Yao Lao must be distressed that he has already smelted the medicinal liquid of Haode Qi Benefiting Pill, and now he is alchemizing it himself.

Knowing that Yao Lao will not speak anymore, the refining of a furnace of pills is completed, and it is estimated that it will be at least tomorrow. Zhen Cheng carefully exited the secret passage, and after washing, he went to bed lightly.

"How's it going, did it work?" A wisp of hot air came, and Wu Xin whispered to Zhen Cheng's ear like an orchid.

"Hmm!" Zhen Cheng nodded, and took advantage of the situation to hold Wu Xin in his arms, "In the future, I won't have to work so hard every night!" ”

"My relatives are here, and it won't be today!" Wu Xin explained with some annoyance, "In a few days, we'll do something about it!" ”

"What?"

"Get out!" Wu Xin pinched Zhen Cheng with a blushing cheek, thought about it and said, "Huang Yiyi has been in retreat for more than a month, should you go in and take a look." For more than a month, there has been no sound at all in Huang Yiyi's stone cave, but nothing has happened! ”

Wu Xin asked Zhen Cheng to go to see Huang Yiyi, on the one hand, out of curiosity, and on the other hand, because he was unwell now and couldn't satisfy Zhen Cheng and apologized.

Zhen Cheng's male hormone secretion is vigorous, hugging the woman, but he has to be patient, Wu Xin knows Zhen Cheng's hard work.

"It's okay! I tried to probe a few days ago, and Yiyi is now breathing evenly! I estimate that by the time Yiyi gets out, it may already be in the late stage of the Heavenly Stage! ”

"Really! Now it's just me who is slow in cultivation! Wu Xin didn't insist that Zhen Cheng go to Huang Yiyi, thinking about this black stone cave and living alone, Wu Xin felt uncomfortable.

"Take your time, don't rush!" Zhen Cheng stroked Wu Xin's back and whispered, "After I learn alchemy, you eat a few more pills a day, and you will soon break through!" ”

"That stuff doesn't taste good at all! After eating the pill, I was not hungry for several days! I've only been in the medicine garden for more than a month, and my body has lost a lot of weight, and when my parents see me, they must be distressed to death! ”

"How successful this weight loss is! There is no lack of nutrients, and the body shape is controlled! Zhen Cheng smiled comfortingly.

"I want to go back to Zhen Kingdom, I'm bored to death in this medicine garden! I originally wanted to help you deal with Moba, but I didn't think I would be able to go back if I stayed here! I miss Zhen Feng and Zhen Yu! "I haven't seen my child for more than a month, although Wu Xin smiles every day, but every time in the dead of night, Wu Xin feels very uncomfortable.

"Sleep!" Zhen Cheng hugged Wu Xin tightly, his heart was as uncomfortable as a needle prick, for the sake of his wife and children, Zhen Cheng secretly swore in his heart that he must stand on the tip of the pyramid of strength.