As time goes by, Yang Fan also feels more and more that "Yang's Twelve Needles" is not simple.

The "Shadow Needle" that I first mastered seemed to have an average effect, and it was actually a situation that could be replaced by other means. Ziying's bonus to human combat power is not necessarily stronger than some powerful drugs involving adrenaline or steroids.

Because the effect is only to this extent, it is not a very extraordinary means. In the same way, it can be regarded as a means at the level of a medical giant. But there is still a long way to go from the legendary level.

And officially, because of this reason, even Yang Fan actually underestimated the effect of "Shadow Needle".

After all, the biggest advantage of Ziying acupuncture is not how shocking the effect of this acupuncture method can be, and how much a person's physical fitness can be improved.

The real advantage of the shadow needle lies in the controllability of its sequelae.

First of all, the shadow needle is not without sequelae. The most obvious effect is to quickly dissolve the body's fat and sugar, and supply the body with the energy needed to explode. And because fat and sugar are consumed so quickly, the body does have to balance too much here.

The final result is that after a shadow acupuncture, it generally takes a person up to a month of cultivation to get rid of that feeling of weakness.

But other than that, there really aren't any other serious sequelae.

It has been nearly a year since Yang Fan first used the Ziying Needle on Liu Qiankun. In this process, Yang Fan has been paying attention to some changes in Liu Qiankun's body. But to put it simply, nothing unusual has been found so far.

The sequelae of this type of acupuncture method usually appear in a short period of time.

It's not a means in fiction, and if you experience such a state once, you will lose a few years of life.

In reality, in fact, it generally only takes a few months without any noteworthy changes, in fact, it can already be regarded as having no sequelae. And Yang Fan here, because the Shadow Needle is not an ordinary means in the end, so for the sake of prudence, he only made a conclusion after observing it for a longer time.

And now, the Shadow Needle is here, and Yang Fan has almost come to a conclusion. It is true that there are no long-term sequelae, as long as you use the shadow needle once and do not use the shadow needle again during the weak period, there should be no problem.

And if it is only the negative effect of the weak period, the sequelae of this method are actually a completely controllable situation.

The effect of the ziuma needle has two aspects. On the one hand, it is detoxification, and on the other hand, it is to improve physical fitness. Although it is a compound effect, both effects can be replaced by other means. The detoxification effect is simpler, but the improvement of physical fitness has special significance.

Just like Liu Qiankun at that time, his physical fitness has actually reached a limit. Relying on ordinary high-intensity workouts, it is already difficult to rise to higher heights.

But because of the effect of the Shadow Needle to improve physical fitness, even if it forcibly allowed Liu Qiankun to break through the limit once. From then on, Liu Qiankun's body broke through the limit, even if it was not a particularly high-intensity exercise, his physical fitness could once again be quickly improved.

This kind of effect of improving physical fitness and breaking through the limit, in fact, those powerful hormone drugs are not impossible to achieve.

But to put it simply, the stronger the lifting effect, the greater the load on the body. The same percentage of physical fitness improvement as Ziying Needle, if achieved with hormones such as adrenaline. First of all, there is a great risk of sudden death.

And even if it is not sudden death, the damage to the body is actually quite huge.

To put it simply, the practical use of this kind of drugs is a situation where the harm outweighs the benefit. For a while, he broke through the limits of his body and broke out with stronger combat power. But the damage left on the body may never be repaired.

It is precisely for this reason that many king-level existences in the world are eager to improve their combat effectiveness to a higher height. But at the end of the day, almost no one would easily use steroids, hormonoids, and the like to motivate them.

is like the so-called super soldier plan of Captain Mi Drama Mi Guo, and the possibility in reality is absolutely low.

If there is such an agent that can achieve such an effect, the sequelae can still be controlled. How could the United States not arm the whole army early?

However, hormonal drugs that can replace the effect of ziuma needles have serious sequelae.

Yang Fan's shadow needle is here, but the sequelae can be controlled in a very small range. If you are cautious, you can actually control it to a negligible level.

However, such a method has made Liu Qiankun's physical fitness improve wildly in a short period of time. Then it got to the point where it could crush the ordinary mercenary king.

In Liu Qiankun's case, this is such a situation. And even Yang Fan himself benefited from the effect of the Shadow Needle.

Just like the previous situation of using the Sleeping Cow Needle, at the beginning, Yang Fan in a normal state, hand speed, etc., could not reach the height of being able to perform the Sleeping Cow Needle.

But because of the shadow needle acting on his body, Yang Fan himself has the state of performing the cow needle.

For a short period of time, Yang Fan was only able to perform the Lying Cow Needle when he was in the state of the Shadow Needle.

However, because the cow needle has been performed in advance, the skills of many details of the cow needle have been gradually mastered. Under such circumstances, Yang Fan's ability improved rapidly, and he reached the point where he could perform the Lying Cow Needle in an ordinary state in a short period of time.

At this time, Yang Fan could be regarded as officially mastering a legendary-level medical technique, and finally reached the height of a legendary-level doctor.

To put it simply, without the Shadow Needle, Yang Fan only needs to find another legendary-level medical technique. Because of Yang Fan's outstanding medical talent, it was only a matter of time before Yang Fan broke through to the height of a legendary-level healer.

But this time problem, if it is a normal situation, even with Yang Fan's talent, eighty percent will not have the possibility of completing this step of breakthrough until five or six years later.

And with the effect of the shadow needle, Yang Fan saved at least five or six years of time.

In fact, Yang Fan has thought about it now, if he uses such a method on a large scale. Will it allow more ordinary soldiers to reach the height of super soldiers?

Five thugs at the level of the king of soldiers, are you afraid?