Bone marrow is the hematopoietic tissue in the human body, the important function of bone marrow is to produce stem cells that generate various cells, these stem cells regenerate various blood cells such as red blood cells, white blood cells, platelets, etc. Pen? Interesting? Pavilion wWw. ｂiquge。 ｉｎfo

In the three stages of the pre, middle and post-transformation of strength, in fact, the three parts of tendon, bone and marrow have been tempered, but the focus is different each time, and the later stage of the transformation is to focus on tempering the bone marrow, and the bone marrow is located in the medullary cavity of the long bone and all the cancellous bones.

Therefore, it is a very painful thing to wash the marrow, Chen Kan heard Li Shuwen say that there was once a martial artist who was killed alive because of marrow washing, which shows his pain.

The key is that the progress is very slow, even if you practice diligently every day, it will take several years of hard work, Li Shuwen took eight years, Sun Lutang took seven and a half years, and it is not easy to endure such pain for so long, so washing the marrow is not only to wash the bone marrow, but also a baptism of the spirit of the martial artist.

So is there a way to speed it up?

Yes, it is recorded in the Huo family's boxing and the secret books of the Tang Sect that if you can continue to use the medicinal materials that can strengthen your qi and blood, and make up for it, you can speed up the progress of washing the marrow, of course, there is no way to alleviate the pain, and it will even increase.

And these medicinal materials are very rare, they all have to be on the last year, on the last plane, Nong Jinsun also looked for Chen Kan for a long time to find the medicinal materials for the dark medicinal bath, not to mention the chemical strength, it is even more difficult to get together, but I didn't expect that in this world, the military can provide Chen Kan with so many rare medicinal materials, which makes Chen Kan surprised at the same time, and can't help but sigh that the name of the country is easy to use.

In fact, Chen Kan's use of these is nothing at all, the military in order to do some experiments, that is the real big consumption, Chen Kan's consumption compared to them, is really called a drop in the bucket.

The Cheetah Commando, the base camp, after another two months of screening, now there are seven people left, and they are all sitting here, in addition to Lieutenant Colonel Phillips.

"Head, what are you doing when you come to us this time?" Nick asked.

"How long have you been here?" Lieutenant Colonel Phillips asked.

"One year."

"yes, it's been a year, and now it's time to test you."

Hearing the lieutenant colonel's words, everyone's eyes lit up, and the business was finally coming, and there were many controversies about their unit actually at the top, and whether this unit should exist or not has been debated.

Some people think that such a small number of troops cannot be of any great use at all, and that any assault troops, covered by artillery, have to be finished.

Some people believe that it is necessary for such a force with superior assault capabilities to carry out some special tasks, and such a force is necessary.

Of course, there are some people whose reasons are more strange, that is, Japan and Germany are now forming such troops, so the United States, as a big country, also needs to be formed.

In short, there is an endless debate about whether this army has the meaning of existence, and the only way to stop this quarrel is to show military merits, and to show military merits that will silence those who question it.

So as soon as they heard that the business was coming, everyone immediately came to their senses, and they knew very well about those arguments, so they always wanted to go to the battlefield independently to prove themselves.

"Here!" Phillips pointed to a place on the map, and that was the goal this time.

Chen Kan looked at it and sighed in his heart: "The goal this time is really not simple. ”

Located on the border with Colombia in the eastern part of Panama's province of Darién, known as the Darién Graben, the area has maintained its pristine rainforest appearance, and Chen Kan remembers that it was best known for its kidnapping and military armament, and in the real world, a teacher at Southern University who studied South American history was kidnapped while studying here, which was a major event that caused a sensation at the school.

This is located in the gap of the Pan-American Highway, the so-called Pan-American Highway, which is the longest highway in the world, and in this plane this road has been built, starting from Alaska in the United States, and passing through most of Central and South America, basically connecting the whole of the Americas.

The road was partially interrupted in the Darién graben area, where the road was cut off for about 160 kilometres because of the congestion of the jungle, and motorists usually put their cars on their boats and sailed to Duanla or Colombia before starting to get on the road.

Much of the Darién Graben is controlled by armed forces and is infested with smugglers and other paramilitaries, and foreign tourists are sometimes kidnapped and held for ransom.

As the United States, which regards South America as its own backyard, it naturally does not allow the existence of such a powerful force, but there has been no way to cut it off, because the environment here is too bad, a large army cannot be deployed, and the cost of action is too high.

Therefore, the military is ready to test the capabilities of this Cheetah commando team that has not yet been formally established, and if it can open up the situation here, then it will prove that this force still needs to exist, and if it fails, then disband.

Of course, it is not to ask the Cheetah Commandos to clean up here, just seven people, everyone knows that it is impossible, this time their target is the largest drug trafficking organization here.

"Of course, I don't want you to act now, our people have already made contact with them, and I believe it won't be long before news comes out, so you have to be prepared!"

"No problem, head, you can rest assured!" Everyone patted their chests and reassured.

"Very good, the captain of this operation is Chen, do you have any opinions?"

Everyone shook their heads, although Chen Kan was a yellow race, but in this year's time, he used his ability to conquer them.

"Okay, after our people get the news, you start to act, remember that this time you not only have to complete the task, but also do it beautifully, otherwise you know the consequences, do you understand?"

"Understood!" Everyone stood up collectively and said very seriously, for a soldier, the greatest shame is to disband the team because of his own inadequacy.

"Okay, any more questions?"

"Report." Chen Kan said loudly.

"Speak!"

"Can you let me go to that area first, I remember there is a group of Ambella tribes who have lived there for generations, they must know the most about the situation there, and I want to learn from them for a while."

"Studying?"

"Yes, familiarize yourself with everything there so that you can plan a specific plan of action."

Phillips hesitated for a moment and said, "Good! ”