After Lü Chao insisted on fighting for all mankind, Yao Chengzhou didn't say anything more, gave Lü Chao a pass, and called someone to register Lü Chao's identity information among the Chuzong aiders in the Huhai Campaign.

Yao Chengzhou went over by night flight, Lu Chao did not go with Yao Chengzhou, and after inquiring about the meeting place, he still had some preparations to do.

For example, test his occult arts.

If you don't know how to use this member skill, it will be very dangerous to rush into battle.

The first test was the ability of the Divine Hidden Technique to shield energy fluctuations.

Normally, objects are only able to emit visible light when their temperature is above 1,000 degrees Celsius.

But all objects with temperatures above absolute zero (-273°C) emit thermal infrared light incessantly. It has been scientifically calculated that the thermal infrared energy emitted by a normal human is about 100 watts.

Thermal infrared, or thermal radiation, is the most widespread radiation in nature.

In the world of high martial arts, some scientists have conducted tests, and the thermal infrared energy emitted by sub-township-level martial artists can reach 200 to 400 watts, and township-level martial artists are 400 to 800 watts, and the infrared energy of martial artists who have just stepped into the realm of grandmasters can even reach 10,000 to 25,000 watts!

Such a high wattage, but not like an electric stove, nor as dazzling as a small sun, the main reason is that this energy is covered by energy armor, and it will not leak out under normal conditions, and it will not be seen.

When the martial artists of the high-martial world are fighting, especially when the high-grade martial artists are fighting, the energy in the body will leak out, forming various light and shadow effects.

The stronger the martial arts, the more dazzling the light and shadow effects.

The energy in the warrior's body is covered by energy armor, and the energy released is the same as that of ordinary people, only about 100 watts. When the level of a martial artist is not very high, even if you deliberately probe, you can't distinguish between ordinary people and martial artists, and you can't distinguish the difference between high-grade martial artists and middle-grade martial artists and low-grade martial artists.

However, when the cultivation reaches a certain level, when you reach the deputy county level or above, you can vaguely sense the amplitude of the energy fluctuations of the humans around you, so as to simply distinguish which people are ordinary humans and which people may be martial artists.

And after stepping into the Grandmaster-level Soul Refining Martial Artist Realm (provincial level), you can diffuse your spiritual power around, and you can detect all the energy fluctuations within a certain range, and even the energy fluctuations covered by the energy armor, so as to clearly understand how high the cultivation realm of the surrounding comrades-in-arms or enemies is.

Lu Chao's member Divine Skill Divine Hidden Technique is an abnormal martial art, which consumes a large amount of gold coins, and the energy fluctuations in his body are completely covered by mysterious powers, so that he has no difference from the surrounding environment in the induction or divine soul detection of other martial artists, and achieves the effect of avoiding the detection of the soul refining martial artist in the Grandmaster Realm.

When it is motionless, it enters a state of physical visual invisibility.

This immobility is not absolute immobility, because as long as a person breathes and has a heartbeat, there will be subtle movements in the body, and no matter how quiet a person is, it is impossible to be motionless in the true sense.

What Lu Chao wants to test now is the change of energy fluctuations after he opens the Divine Concealment Technique, and how to operate it to completely enter the state of physical visual stealth.

To test energy fluctuations, Lu Chao went to buy a thermal imager with video recording function.

Where thermal imagers are sold, there are also eavesdroppers for ultra-long-distance real-time transmission for sale, and Lu Chao bought dozens of them for more than 200 yuan each.

After returning to Chuzong's Lu Mansion, Lu Chao turned on the thermal imager to shoot on the ground, and briefly turned on the Divine Concealment Technique for a few seconds.

Then observe the video recorded by the thermal imager.

Sure enough, after the Divine Occult was activated, he completely disappeared from the thermal imager, as if it didn't exist at all.

The physical visual stealth state of motionless is more cheating.

This can only be tested by Lu Chao himself with his mobile phone.

After spending more than two million gold coins to conduct repeated tests, Lu Chao found that the physical stealth state has the following characteristics.

As long as he is quiet and does not make much movement, he will enter a state of physical visual invisibility, a very slight amplitude of movement, will not let him appear from the stealth state, but the range of action is slightly larger, or the overall position of the body has shifted, it will inevitably appear.

There is also a point that is even more deceitful.

That is, when he wears clothes, clothes cannot be hidden at the same time, and after his body disappears, the body still retains the shape of his body, but it is empty inside, and it looks like a ghost.

Doesn't that mean he can only be invisible when he is not clothed?

This can't be tolerated!

After repeated tests, Lu Chao found that when he was wearing that set of rune alloy scale armor, the rune alloy scale armor could be invisible with him, and the rune dragon slayer knife in his hand could also be used.

Because they are integrated with the 'qi' in the body?

In addition, the underwear and inner cool in the rune alloy scale armor can also be invisible together.

This principle is not very clear, but this is a good thing, avoiding Lu Chao from directly wearing the alloy scale armor against the flesh for the sake of stealth effect.

Lu Chao soon discovered another thing.

That is the test video he shot with his mobile phone, and after watching it once, it disappeared automatically and could not be saved on the phone's memory!

The mysterious forces behind the wilderness are erasing the traces?

Of course, Lu Chao also knows the seriousness of this matter, he is still very weak, these member magic skills are still rarely used in the high martial world, and try to only use them when no one is paying attention to the colonial star.

In case it attracts the attention of the high-level of the Gaowu World Government, it will not be fun to dissect him as a guinea pig.

Yao Chengzhou has discovered some of his abnormalities and covered them up for him, and he will continue to keep a low profile in the future and not let more people discover his abnormalities.

After testing the Divine Hidden Technique, Shan Yao called.

said that the goose country people who traded last time got a snow missile vehicle that can be assembled and disassembled with its own positioning function, and the disassembled components can be transported by individual soldiers, and asked Lu Chao if he was interested, and the transaction price was five hundred qi refining pills.

Missiles were purchased separately, one missile and ten gas refining pills.

This goose countryman's name is Yuri Kutepov, and he is a reputable seller found by Shan Yao and Qian Chao in many ways, and the price of weapons is relatively high, but the quality is very reliable.

During the last transaction, Lu Chao mentioned to Yuri Kutepov that he would only buy weapons that could pass through the right door that was one meter wide and two meters high, and no matter how big the weapon was, he couldn't take it away.