The reason is also very simple, that is, after this white-haired man entered the darkness, he began to release a faint metallic smell.

Chen Mu was a little familiar with this taste, and he had felt this taste when he had been in contact with and fought with those crows and ghosts before.

Although the taste of each Raven is more or less different, there are still many things in common, and if they are the same kind, they are easy to identify.

According to the information that the monkey obtained from the ghost clan, this unique and strange metal smell is actually derived from the metal colonization in the body of the crow ghost, such as the most common steel heart, which will emit this smell when activated to a certain extent.

Of course, in order to prevent identity exposure, the crow ghost in the latent state will definitely not easily release this special flavor similar to the identity recognition mechanism.

Moreover, in many improved models in the later period, the more advanced metal cultivation suits have been able to greatly condense this smell, and unless it is an overloaded fighting state, it will hardly be emitted.

Since the white-haired man in front of him exudes such a smell, and he is not in a fighting state now, there are only two situations, either he deliberately releases it to show his identity as "of the same kind".

Either the model is too old, and it belongs to a very early elimination type of crow ghost, even if this kind of crow ghost is not in a combat state, it will release a load every once in a while, which is naturally accompanied by the emanation of this smell.

As for how the other party discovered the "taste" on his body, Chen Mu has no clue for the time being, in fact, as early as after reuniting with the monkey, he has discussed this issue with the monkey many times.

No way, this is actually a very fatal problem, since the black-robed woman was able to identify her identity as a "ghost clan" outside the "mechanical maze" before, it is difficult to guarantee that no one else will be able to find out in the future.

Of course, when Chen Mu and the monkey discussed before, they couldn't be sure that it was a matter of "taste", after all, in the intelligence of the ghost clan, there were actually many ways to judge the identity of a ghost clan.

The most direct and definite method is, of course, to check whether there is metal in the body, and the primitive method of examination is autopsy, but most of the time it is used on corpses.

The more advanced civilization method is naturally to use things like X-rays, but there is no perfect industrial base in the wasteland, and it is impossible to build X-ray scanners with bare hands, and what can be used is a small number of old antiques excavated from ancient ruins.

But there are also soil methods in the wasteland, and technology can't be counted on, but there are European qi here, as well as all kinds of strange bloodline abilities, and a variety of martial arts, and there are really a lot of things that can detect metal, and even similar to perspective.

There are too many of these chaotic local methods, most of which are based on the personal talents and abilities of martial artists, and there is no unified standard at all, and it is naturally impossible to design any counter-reconnaissance means in a targeted manner.

So after Chen Mu and the monkey racked their brains, they finally reluctantly gave up the idea of finding a perfect solution, and could only use the means and resources that could be used as much as possible to disguise themselves.

For example, the smell of metal, Chen Mu, with the assistance of the monkey, used a black technology method, which is actually a large pile of messy materials, which are extracted by the monkey and smeared on the body surface to cover up the body odor.

The side effect is that this thing has a strange smell similar to fox odor, and it is not a small poison, that is, a highly metalized body like Chen Mu can ignore it, and if it is replaced by a human warrior, it will have to shed its skin if it does not die.

Fortunately, this thing can be applied for a long time, unless it is cleaned with the corresponding extract, no matter how windy, sun, rain, or rain, you don't have to worry about being washed off.

Chen Mu is still very confident in the black technology level of monkeys, so in the taste link, it is unlikely to be exposed.

The white-haired man did not have physical contact with him, so it should be unlikely that he detected the metallic texture of his body.

It's not that Chen Mu's body is all erect metal, on the contrary, his body is indeed highly metalized, but the magic is that the feeling of the body in contact is no different from that of normal humans, and it still has temperature and softness.

Basically, except for not sweating much, the other places are not too much, even the shhh

Unless it is a destructive attack method, such as giving Chen Mu a knife, it can be obvious that the difference is different, after all, the knife is cut on the flesh, it is unlikely that the knife will be broken, but the oil skin will not be cut.

Even if it is a martial artist who specializes in martial arts such as the Golden Bell Jar and the Iron Cloth Shirt, if he does not activate the Ou Qi, then with only the strength of the flesh, when facing the sharp blade, he will definitely not be able to cut through the oily skin.

But Chen Mu's current body, except for a small part of the place that has not yet been metalized, the rest of the positions, even if it is a seemingly weak little Ding Ding, it can really break the steel knife with a chicken.

So in this regard, the potential exposure risk is really the greatest, even if Chen Mu has the intention to disguise, he can't change the invulnerability of the cheating physique, once he encounters the opponent's intentional temptation, he can be tested with a random attack.

Even so, Chen Mu still has a countermeasure, the way is to maintain the European Qi body protection at any time, if he encounters an unexpected attack, then he can naturally use the cultivation of powerful body protection skills as an excuse to cover up the fact that the body is metalized.

This is indeed a way, and even among a very small number of human martial artists, there are people who have a special physique to cultivate the metallic horizontal practice method, and they will cultivate their skin, even muscles and bones, in the direction of metalization.

It's just that this is an evil path, not to mention the danger of this practice itself, just saying that this kind of "magic change" to the body can easily induce the alienation of the bloodline, and if you are not careful, you will not be able to control it, and eventually become an alien, that is, a demon race.

So no matter what, as long as it is found that the body is greatly metalized, then even if it is not considered a ghost race, it will definitely be suspected of developing in the direction of the demon race, belonging to an absolute outlier, and being excluded is light, and it is normal to be caught as a slave, or killed on the spot.

Anyway, in order to cover up the highly metallic thing of his body as much as possible when he was in the latent state, Chen Mu could be regarded as trying to break his head, but there was no perfect way, so he could only say that he could do it for the time being.

In front of him, Chen Mu felt that the biggest possibility was that the white-haired man found out that he was a "ghost clan", thinking that he had met the same kind, which triggered the follow-up plot and took the initiative to exude the smell to show his identity.