Crossing the junction of silver pine forest and Hillsbrad hills, Zhang Cheng quickly chose an insignificant Valley as his temporary foothold.

When Kulo kelba's huge reminder just landed, the frightened war horse immediately ran crazy into the woods and disappeared in the blink of an eye.

However, at present, Zhang Cheng has been unable to chase the mount. He quickly jumped down from the dragon's back and began to check various indexes of the dragon's body, especially the changes of blood, with the help of a small amount of tools carried in his waist bag.

You should know that for magical creatures, blood not only plays the normal functions of transportation, metabolism and immune system, but also the center of energy operation. To find out their strength, just take a little blood and analyze the energy contained in each milligram of blood.

Of course, this calculation method with obvious modern scientific tendency is his original creation. Most mages only draw the blood volume of a standard medicine bottle, and then judge the strength according to their own estimates.

"Father, are you worried about my change?" Kulo kelba seemed to have long been used to being drawn blood. Instead of resisting, he opened his mouth and let the sharp needle pierce into the soft inner wall of his mouth.

"Shouldn't I be worried? You must understand that all forms of power and evolution can't happen for no reason, let alone without paying the price." Zhang Cheng explained, squeezing the blood in the needle into several test tubes, and then injecting a small amount of energy with different properties into them for observation.

In just a few seconds, the test tube injected with arcane energy first burst out bright light, as if even the sun in the sky had lost color.

There is no doubt that the arcane energy contained in Kulo kelba's blood is the highest, and even far exceeds the limit of most senior mages and even archmages per unit volume.

If it can learn magic, its strength will surpass most casters. It's easier than eating and drinking water.

But unfortunately, although the dragon has quite clear thinking and the ability to speak, its intelligence level is as curious about everything around as a child of seven or eight years old. It always asks this and that, as if it had kicked 100000 why.

This level of intelligence, not to mention learning raw and difficult magic theory knowledge, is that slightly difficult mathematical problems are quite difficult.

But if this amazing magic talent is allowed to waste, Zhang Cheng feels that it is too wasteful. At least in his idea of being eager for quick success and instant benefit, this will never be allowed to happen.

Just when he felt a little tangled and headache, several other calm test tubes suddenly burst into violent reactions.

I saw the red blood flashing violet luster from time to time suddenly began to shine, some showed a warm golden light, some began to burn, some condensed into bone chilling ice, some constantly released white electric light, and the last bottle sent out an unknown black fog.

What's more shocking is that after a short energy resonance, all test tubes return to the violet brilliance of arcane energy at the same time.

Such a violent and rapid energy transformation, let alone Zhang Cheng who has no clue at all, even Dalaran's Archmage will be stunned when he comes.

"Incredible! Incredible! Holy light, shadow, element, life... All energy forms are finally transformed into arcane and integrated into the blood, even without much loss, which is simply not in line with the theory recorded in books. Is it the problem of the Dragon variety of the song of ice and fire? Or is there some change during hatching? Energy... Arcane... Devouring ... transform... "

He was like a madman who discovered the "new world", his eyes showed a fanatical light, and his mouth kept talking to himself.

In contrast, Kuro kelba was much more calm, slowly lying down, opening his mouth full of fangs and yawning.

As an experimental body that has been drawn blood and tested since birth, it has seen too many unreasonable crazy behaviors of "father". It doesn't think there is anything to make a fuss about, and falls into a semi sleepy state.

In short, one person and one dragon settled down in the valley. At least Kulo kelba knew that they would not move easily until the "father" got the answer they wanted.

Time flies. Ten days have passed in a flash.

With the powerful power of the mage, Zhang Cheng built a temporary laboratory with clay, wood and stone. He hid in it all day and constantly explored the mystery of dragon blood. Except that he would draw some blood after using up the research materials, he spent the rest of his time in a simple house.

As for Kulo kelba, he occasionally hunts some animals around to fill his stomach. The rest of the time is to absorb the rich magical energy in the air and then sleep.

Only a few days after arriving at Azeroth, its body has grown to an amazing 40 meters, almost no different from those Guardian dragons who have lived for hundreds and thousands of years.

I'm afraid no one will believe that this little guy is only about one year old from hatching to now, and is still growing at an incredible speed. In a few years, it will become a real "great beast", a terrible monster that can destroy a city or even a country alone.

Of course, if only the change in body shape is not enough to arouse Cheng's research interest, what really interests him is Kulo kelba's highly malleable magic talent.

Including most of the formed spells and different kinds of energy, they will be transformed into Arcane spells in front of the dragon, absorbed and stored, as if there was something in the huge body.

This means that all casters can only use summoning or deformation spells in front of Kulo kelba and defeat him through frontal collision. Otherwise, they will turn into energy and be absorbed before they fly close.

Although this absorption has a ceiling limit, it is impossible for most mages to get it at all. In addition, in close hand combat with a giant dragon, as long as the brain is not crazy, no mage will try it easily.

"A simple explanation is magic absorption and immunity. It's a great ability..." Zhang Cheng concluded with a wry smile, staring at his bloodshot eyes.

As a mage, he knows too well how amazing Kulo kelba's ability is now. Coupled with the deadly spit mixed with arcane energy, he is the natural nemesis of the caster.

Most importantly, the magic contract he used when hatching dragon eggs did not fade with the strength of the dragon, but became closer and closer. Sometimes he could even know each other's feelings through telepathy