It is estimated that the response will only occur on card 4 because it is close to the mission location, and from this point of view, the task on card 4 seems to be unusual.

However, Han Du really didn't know if he could stop halfway, so for insurance, he put the four cards in his jacket pocket and continued to walk forward.

As he gradually moved away from the abandoned tunnel, Han Du felt that the high temperature on the card 4 slowly decreased, and finally he couldn't feel any temperature at all.

On the straight and long road, Han Du continued to walk north. The surrounding terrain was shrouded in darkness, empty and remote, and the cries of wild beasts were constantly heard from the nearby mountains and forests, whether they were mountain wolves or wild boars or something else.

Han Du remembered that it was said in the news not long ago that someone and a vehicle broke down on the road outside Guqing City, and as a result, when they got out of the car to check the condition of the vehicle, they were attacked by some animals, resulting in one death and one injury.

Now that Han Du has left the city, he has not seen the surveillance on both sides of the spacious road, and there are no street lights, so he can only move forward by the moonlight. As far as the eye can see, except for barren mountains and fields, Han Du can rarely see people.

Such a scene made Han Du feel a little uneasy in his heart, worried that he would also encounter a beast, but he didn't have the slightest idea of stopping.

Han Du stepped on the solid road, smelled the smell of asphalt, and visually saw that the road after leaving the city was newly built, and after walking more than 500 meters, Han Du found that there were no street lights.

The line of sight here can only be seen more than a hundred meters away, and Han Du is getting more and more difficult to walk, because the physical exertion is already very large. He touched his forehead with his hand, bringing down the sweat from his hand.

As Han Du walked, he looked at the map on his phone, which showed that he had walked thirty miles, and more than four hours had passed.

There were still the last twenty miles left, Han Du gritted his teeth and continued to persevere, such a long journey could be regarded as a workout for him.

Suddenly, when Han Du secretly felt a little struggling, a chaotic running sound sounded two hundred meters ahead, accompanied by a snorting sound, like the cry of a pig.

In this position, such a large-scale movement, Han Du understood that it should not be a domestic pig, it was estimated that it was a group of wild boars, and the entire family was dispatched.

However, Han Du's vision was blocked in such an environment, and he could only barely see a group of blurred black shadows, large and small, running from one side of the road to the other.

When Han Du walked to the place where the wild boar was infested, he saw some leaves and brown hair left on the road, and even a wild boar pulled a bag of in the middle of the road.

Han Du didn't know where they were going, and continued to walk forward, when he finally saw a truck coming from a distance, when the driver passed by him, he turned his head to look, and wondered how someone could run out to press the road in the middle of the night, but he was out of the house, worried about danger, and did not stop to ask.

In his career, he has also seen some people with mental problems wandering around the highway in the middle of the night, and when he saw Han Du, he also thought that Han Du might be a mental patient, and if Han Du knew that he saw himself like this, he would definitely want to spray his face.

In the following sections, Han Du encountered several trucks and trucks one after another, and it is estimated that they were all transporting goods overnight.

Later, after Han Du walked a distance, he looked down at his mobile phone, and found that he had walked 51 miles, which was considered to be overfulfilled.

He hurriedly stopped, looked at the card 2 in his hand again, and disappeared at some point.

At this time, the damn system suddenly spoke up when he saw Han Du stop, and it was estimated that if Han Du didn't stop, it would never come out to remind Han Du, so that he would walk an extra mile.

"Congratulations to the host, complete a limited scene mission, and get a 639 muscle strengthening reward!"

The sound of the system's mechanization sounded, and Han Du stood in place, his expression becoming very surprised. Because he used to write books all year round, in order to describe accurately, he checked a lot of information, including a large number of human body structures, so he knew that there are 639 human muscles, composed of about 6 billion muscle fibers, of which the longest muscle fibers are 60 centimeters, the shortest is only about 1 millimeter, and the large muscles weigh about two kilograms, and the small muscles are only a few grams. The average person's muscles account for about 35 to 45 percent of their body weight.

Through this expertise, it can also be seen that muscles are a very important part of the human body, and if they can be strengthened, their body will naturally rise and become stronger.

At this moment, Han Du suddenly felt hot all over his body, as if his entire body was instantly being reconstructed and regrowing at a perceptible speed, and even his body was slightly taller and longer.

The voice of the system sounded again at this moment: "Ding, the strengthening is complete, the smooth muscle is strengthened by 15%, the heart muscle is strengthened by 25%, and the skeletal muscle is strengthened by 75%. ”

The 639 muscles of the human body can be divided into three categories, which are smooth muscle, cardiac muscle, and skeletal muscle. Smooth muscle mainly constitutes internal organs and blood vessels; The myocardium makes up the heart wall; Skeletal muscles are distributed in the head, neck, trunk, and limbs, and are usually attached to bones.

At this time, Han Du was already in length, his body had become the kind of body with a perfect golden ratio, and his body had surging blood power, and now he had the confidence to burst a sandbag with one punch, this kind of power was already very powerful for a person in reality.

Han Du touched his abdomen and arms, under the cover of his clothes, there were bulging strong muscles inside, but Han Du's muscles were different from those athletes who specialized in muscles, and they would not appear to be bulging from the outside, which meant that the external beauty was very well controlled, and at the same time, his current physical potential was greatly tapped.

Don't look at the strengthened data is only 15%, 25%, 75%, but the system of strengthening can bring amazing changes, his current muscles are like a small fishing line made of high-tech materials, and those muscles of the muscle athlete are like finger-thick hemp rope, although thick, but not comparable to small fishing line.

Moreover, smooth muscle and myocardium are distributed in the body, and it is not suitable for significant strengthening, otherwise it will seriously damage the balance of physiological functions in the body, and in order to maintain the overall balance of the body, the degree of strengthening of skeletal muscle is also set at 75% by the system, and if it is strengthened alone, 100% strengthening of skeletal muscle is also possible.

"Roar!"

"Roar!"

Just when Han Du seriously felt the condition of his body being strengthened, two roars suddenly came from the position behind him, Han Du frowned, turned around, and saw that on the opposite side of the road, two sturdy, more than one meter long gray wolves appeared out of nowhere, looking at the position behind them, there was a large lush forest, it was estimated that they were foraging at night and ran here by mistake.

Facing such two grinning wolves, a smile appeared on the corner of Han Du's mouth, it was a good and coincidental time, just in time to try how powerful this strengthened body was.