Originally, Han Li didn't plan to prepare the last two kinds of medicines that had nothing to do with practice, but after thinking about it carefully, he felt that he was half a person in the rivers and lakes no matter what he said, God knows if he would have a natural disaster one day? Will he be involved in some fights and killings on the rivers and lakes? It is better to prepare some antidote and healing medicine in advance, in case he is poisoned and injured, wouldn't it be too wronged to hang up because there is no good medicine!

After thinking about it like this, Han Li still prepared a small amount of the latter two medicines, preparing to take them with him in case of accidents, after all, all people only have one life, and Han Li didn't want to die young.

Although this will affect the quantity of the other two elixirs, thus slowing down the cultivation progress of the mantra, it is also a helpless thing, after all, there can not be so many perfect good things in the world, and there are always some trade-offs in being a human being at certain times.

On the day that Han Li finished preparing the pill, he began to take a "Yellow Dragon Pill" and a "Golden Pill" respectively according to the method of taking it as stated in the formula. These two medicines really deserve to be the legendary holy medicines, under the powerful and amazing power of the medicine, without much effort, he broke through the bottleneck that night and practiced the fourth layer of oral duel.

As soon as he reached the fourth layer, Han Li immediately experienced a completely different feeling from his previous five senses. All of a sudden, everything in his eyes suddenly became so bright, so clear, and some subtle things that he couldn't see suddenly became magnified, and the details were visible in his eyes, even the slender spider silk in the corners of the room was clearly visible, and the ear's hearing suddenly became extremely sensitive, and countless sounds that he had heard before or had not heard all poured into his ears, such as the "rustle" of an earthworm burrowing into the ground more than a dozen feet away The sound, the "buzzing" sound of an unknown insect flying in front of the house, and so on, these sounds seemed to ring in his ears, sounding so real, so clear, and in addition, some strange smells that suddenly came out also made Han Li know that his sense of smell was also very different from before.

Han Li was surprised and delighted, this was the first time he had felt that the time he had spent had not been wasted since he had cultivated this mantra, such a different feeling showed that this mantra was not useless, but had its own uniqueness.

Although the previous layers of cultivation had also improved his five senses to a certain extent, they had not changed so obviously and so dramatically like the fourth layer, which was simply a qualitative improvement, just like a completely different person.

In addition to that, he also felt that his body was much lighter than before, and his spirit had also made great progress, and now that Han Li had not slept for three or five days, it was estimated that there would not be much of a problem.

Han Li savored what was completely different from what he had been before. If he stayed where he was standing still for a moment, he could understand the big and small things that were happening within a few tens of zhang, and this feeling of being able to control everything made Han Li very obsessed.

Now he realized that practicing this mantra to the fourth level was really a slight success.

He couldn't help but think that the fourth layer had such an unforgettable taste! What kind of wonderful feeling would he have after practicing the fifth and sixth layers!

Not long after Han Li had just comprehended the mystery of the exercises he was cultivating, his nominal master, Doctor Mo, had returned to the valley. Not only did he come back on his own, but he also brought back another mysterious figure.

As soon as Doctor Mo entered the Divine Hand Valley, Han Li heard the familiar coughing sound from a distance, and he was meditating and cultivating in the stone chamber at that time, striving to be able to improve to the next level as soon as possible. After noticing Doctor Mo's voice, he quickly regained his luck, walked out of the stone room, and walked in the direction of Taniguchi to meet the master who had not seen him for nearly a year, and as a result, he met Doctor Mo not far from Taniguchi.

As soon as he saw Doctor Mo, Han Li was taken aback, he was still the same person, but what caught his eye was a gray face that was not a little angry, although he was also scorched and sick, but he would not be as corrupt as he was now, and he looked like the ultimate limit had come.

What surprised Han Li even more was that behind him was a mysterious figure with a black cloak on his head, and his whole body was tightly covered by a wide green robe, not leaking half of his skin outside. This person was unusually tall and burly, two heads taller than Han Zheng, and had a huge body like a giant spirit, but because he was wearing a cloak, Han Li couldn't see this person's face clearly from the outside, and could only vaguely feel that this person's face would definitely be hideous and terrifying, ugly and abnormal.

Han Li pressed the question in his heart, and hurriedly stepped forward to greet Doctor Mo, and then stood aside respectfully, waiting for Doctor Mo's questioning.

He knew very well in his heart that the other party didn't care whether his apprentice was polite and respectful to him, but for him as a disciple, the proper master-apprentice etiquette must be done sufficiently, and he couldn't be abandoned at will, giving the other party a feeling of being unruly, which would only put him in a more unfavorable environment.

According to Han Li's various understandings of Doctor Mo, and judging from how much he cared about his mantra cultivation on weekdays, he hadn't seen him for such a long time, and it was estimated that as soon as he saw him, he would first ask him about his mantra cultivation status to determine how Han Li's progress was.

Sure enough, when Doctor Mo saw Han Li take the initiative to greet him from the valley, he was slightly stunned, coughed twice and then asked weakly:

"How are you doing, and have you made any slight progress?" said a look of anxiety and antiquity on his face.

Han Li had already prepared his mind in advance in his heart, and said the prepared answer.

"It's the same as before, nothing has changed much. Han Li didn't intend to tell the other party the truth about his cultivation, because he couldn't explain his current progress like divine help, how could he suddenly and miraculously go from the third layer to the fourth layer without external force.

"Stretch out your hand. Doctor Mo's expression became gloomy, and his tone suddenly became stiff.

After Han Li carefully noticed this expression of Doctor Mo, he felt a little uneasy in his heart.

However, he was not afraid that the other party would personally take the pulse to find out the true qi in his body. Because after entering the fourth layer, Han Li unexpectedly found that he could manipulate the strength of the strange true qi in his body at will, he could completely control the strength of the true qi when he was in the third layer, and he could hide it from the world without fear of Doctor Mo's personal inspection.