It's not easy to improve his cultivation. Liu Rufeng has experienced many similar things before, so the current situation is very common for him.

Think of the time in the base, every day to practice running, push ups, squats and all kinds of physical training, then it is really hard. Every day running 20 kilometers, 1000 push ups, squat up 500 times, can't finish not let eat, many people even in the middle of the night in the playground running circle.

When it comes to rock climbing and fighting, it's even more cruel. In order to increase the effect of training, the instructor requires everyone to show the actual combat state. In this case, many people will be injured, so a group of people will be carried to the hospital every day.

It is in this very cruel training state that a group of excellent special forces have been trained, so that these people can successfully complete their tasks in a variety of cruel struggles while preserving themselves.

And Liu Rufeng, Xiao Wu, and ice snow silver fox are undoubtedly more outstanding among these people.

In addition, Liu Rufeng also attaches importance to the cultivation of internal power, and learned the nine palace eight trigrams step by chance, which makes him more outstanding in a group of special forces.

In the process of improving his self cultivation, Liu Rufeng also deeply realized that it was more difficult to cultivate his internal skills than to strengthen his physique, and there were even all kinds of adverse reactions, such as nausea, chest tightness, irritability, imagination and so on. So these experiences also deeply honed his will, and his mood was much firmer than ordinary people.

Liu Rufeng opened the acupoint of perineum, but when practicing meditation, he didn't open the point of Tanzhong.

According to Hu Yifu, this situation is very normal, because the nine cauldrons need nine stages to refine the spirit, and it is impossible to get through the two orifices in one day. In that case, this skill is too magical and does not conform to the law.

Liu Rufeng was calm and relaxed. On the contrary, he achieved good results. After meditating for nearly an hour, there were signs of palpitation at Tanzhong acupoint.

Liu Rufeng was happy, so he practiced more seriously, and his mind was more relaxed. He kept all his spirit on Laogong acupoints.

As he was able to absorb the aura between heaven and earth, the Laogong acupoint in both hands became hotter and hotter. Later, he could even use his divine sense to see that the Laogong acupoint was larger than usual, and there was a faint white light on it. With the expansion of the cave gate, the speed of absorbing aura is also increased.

Just like when practicing Yongquan acupoint, the aura flowing in the two arms is several times stronger than at the beginning. It seems that there are two warm currents warming the meridians and muscles in the two arms, which not only eliminates the fatigue, but also strengthens the invisible strength.

The aura continued to flow in gradually, and more and more auras gathered in Tanzhong acupoint. When the aura finally gathered to a certain amount, it was like the surging flood began to impact Tanzhong acupoint violently. This time, Hu Yifu didn't prompt and Liu Rufeng didn't ask. Instead, he concentrated his thoughts on Laogong acupoint in both hands, ignoring the changes of Tanzhong acupoint.

But the more Liu Rufeng didn't think about it, the more Aura gathered around Tanzhong acupoint. Because Tanzhong acupoint couldn't be opened, the aura gathered around it couldn't be released. Later, he only felt his chest was stuffy, just like a fire in his chest. The hot temperature burned his chest tearing pain.

Hold on, hold on!

Liu Rufeng thought, "I'll see if there will be any big changes in Tanzhong acupoint when the condensed Qi reaches a certain level. As long as I can persist, I won't disperse the aura around Tanzhong acupoint."

Thinking of this, he shifted his attention and focused on the Laogong acupoints in both hands. Although his chest was stuffy and almost his breathing would be affected, he persisted.

Chest fever, body temperature is also rising, finally Liu Rufeng felt his body began to send out heat, hot sweat has soaked his skirt.

After more than ten minutes, Liu Rufeng observed and found that the surging breath made a crazy attack on Tanzhong acupoint again. Finally, Tanzhong acupoint could not withstand the powerful aura impact, and a gap appeared.

At this time, Liu Rufeng finally could not hold on, and began to use his mind to guide a lot of aura into the Dantian, and turned into a white air mass.

Finally, the burning sensation slowly disappeared. Liu Rufeng was also tortured and sweating. He took a breath and said to himself, "it seems that every step has to experience a double torture of body and mind. No wonder Hu Yifu stayed in the early stage of congenital second floor for so many years. The more difficult it is to estimate later."

Hu Yifu slowly opened his eyes there, looked at Liu Rufeng's appearance, nodded slightly, and said: "smelly boy, I really didn't see you wrong. Is there a breakthrough in Tanzhong acupoint?"

Liu Rufeng nodded and said, "yes, how can you tell?"

"Observation." Hu Yifu said faintly: "generally, sweating like you must be caused by the stagnation of aura around Tanzhong acupoint. Now you are smiling, it is estimated that you have made some progress. Boy, OK, you are more than twice as fast as I used to be. It seems that I need to re plan your cultivation speed."

"Luck, luck, ha ha..." Liu Rufeng replied with a smile.

"Luck? The saying that there is no luck in the world is all due to your own savvy and willpower. You are not only very savvy, but also very tenacious. I dare say there will be miracles in you. " Hu Yifu said with appreciation.

Liu Rufeng felt that this was the best words he had ever said since he knew Hu Yifu.

In this way, Liu Rufeng didn't go out for three days, and ice snow Silver Fox also came here to see them as agreed. Of course, every time he brought delicious food, Hu Yifu was also very happy to see ice snow silver fox, and he also gave some advice to ice snow silver fox.

Ice snow silver fox is also a very smart girl. She has a very high talent for martial arts, but she is seldom willing to practice such complicated skills. She only works hard on the beauty and flexibility of moves, and only relies on her own explosive power in strength.

In fact, as long as she wants to learn, Hu Yifu will certainly teach her, because their relationship is closer.

Unfortunately, snow silver fox is not willing to learn, Hu Yifu also can't force her to learn, but had to teach snow silver fox a set of short-term tactics.

Cunjin is to play the strongest power in the shortest distance. Yongchun boxing is good at Cunjin.

Cunjin technique is really suitable for the hot temper of ice snow silver fox. She is also very attentive, so she learned it in a short time. It's just a matter of heat.

On the third day, Liu Rufeng changed a lot. Yongquan acupoint expanded a circle, and an invisible force suddenly appeared in perineum acupoint. It was like a breeze blowing the lower end of Dantian, making Dantian as comfortable as spring wind thawing.

And the opening gap of Tanzhong acupoint also increased by one point.