On the one hand, the mining industry that uses star trees to mine will automatically die after harvesting fruits or stems full of precious minerals. The star tree plants will die, and these death residues are also crystals of minerals. Although most of them are crystals of basic conventional minerals, this thing is the best grain material for crystal dragons. As long as some energy bodies are added, they are made by dragon soldiers who specialize in making food, a continuous stream of dragon food will appear. The development of crystal dragon population can also lead to an explosive effect.

, on the other hand, the mining ability of the crystal dragon is very powerful, which is also one of the places where Han Zhen values ​​the most. Its best practice is to penetrate deep into the deepest part of the ground, whether it is the magma layer or the center of the earth, where humans are difficult to reach or require huge efforts and costs to reach. It is not a problem for the crystal dragon. These places are the ones with the most good things - the star trees can take root on the surface and lay thousands or tens of thousands of meters or even further, but no matter how deep they are, they cannot penetrate deep into the magma and the heart of the earth...

Combining the two, the star tree can fully absorb rare and precious minerals from the surface of the ground, and the residue left after death can also be given to the dragon clan as food. The dragon clan is specifically responsible for digging the planets and the inside of large meteorites. For minerals with relatively concentrated minerals, they are more concentrated and directly mined. For some minerals with discrete distribution, small content, and difficult mining, they are transported to places where the star tree can be exposed to the lush roots, absorbed and condensed through the star tree.

Mineral reserves are a big problem facing China. Now that Jinglong is in line with mining, it is complementary to the mining industry. This combined mining method is regarded as a major event by Han Zhen.

The crystal earth dragon carrying it goes down the hovering tunnel at a very fast speed. The "villa" above it can open multiple layers of protection. Not only is it equipped with a technological protective cover, but it also has a cultivation array as a means of protection. It is naturally safe and stable. In fact, whether it is Han Zhen or Xiao Hei and Xiao Bai, they can walk and teleport freely in the void. The environment has a very small impact on them. However, Sun Jing and Han Yu, who has a physical one, are a little worse, but they all have single protective covers specially modified by Han Zhen. These protective covers with better quality, more complete functions and better performance than those used by level 7 countries. They are directly dropped into the hot magma, and are enough to support for more than ten days after opening.

The protection measures of villas are mainly arranged to facilitate some researchers from the institute to come here to inspect the situation. Their bodies cannot withstand the severe environment deep underground. In addition, researchers are all valuable assets of China, so Han Zhen naturally has to treat them carefully.

Five thousand meters, ten thousand meters, fifty thousand meters, ten thousand meters, ten thousand meters..., about 200,000 meters down from the surface, the fibrous roots of the star trees seen in the cave were less and less until they disappeared completely, while the figures of the crystal earth dragons were more and more, especially in this area of ​​200,000 meters, there was a huge space, which was one of the places where the crystal earth dragons lived and reproduced. I saw groups of crystal earth dragons covering the outer wall of the entire space. In the cave connecting the space, whether it was a large or a small hole, the crystal earth dragons coming and going were flowing endlessly, and this was just a space on the level of 200,000 meters. Each of these spaces has its own responsibility and division of labor. If all of them were added together, there would be no less than one thousand spaces on the entire level!

After Han Zhen and his friends entered, the obedience, attachment and even fanatical beast consciousness gathered around them as if they were of substance, but Jinglong did not stop their own lives. This was what Han Zhen set at the beginning. As long as he did not receive the new order, his work could not be stopped.

Two hundred thousand meters, compared with a planet that is more than ten times larger than the earth, it is definitely not deep underground, and may not even have the outermost surface. Therefore, there are also digging dragons and engineers' ground dragons on this level. The more they are responsible for, the more work they are mainly about transporting and connecting the roots of star trees.

Han Zhen and his party did not stay for long and entered the downward cave again. 300,000 meters, 400,000 meters,... The downward cave was getting deeper and deeper. When it reached one million meters, Han Zhen stopped for a while, because there were traces of breeding mother beasts. Moreover, it was also a very important matter to come here to check the growth of the mother beasts.

The crystal dragon mother beast has no similar appearance to the crystal dragon. It looks like an octopus with only a thousand tentacles, and each antennae extends as much as possible on the ground, making it occupy a wide area. There are thinner things like transport tubes to connect them, such as meridians in leaves, in which there is a leaf-like layer of membrane-like substance covering the highest point of the mother beast. The highest point of the towering place is the most central head, and its size is greater than that of the largest holy dragon.

After being combined together, it is much larger. Next to the head are attached to the fertility and incubation chambers, arranged from the inside out, in order from small to large. If you observe more, you can see that these fertility is not static. They are slowly moving slowly towards the direction of the antennae until the middle position where the antennae extends, the incubation chamber will break and the new crystal dragon will be born; the position closest to the head that appeared before due to movement will be occupied by the new fertility body, and the hatching will begin again.

This method of reproduction was obtained by Xiao Hei in the process of constantly absorbing current genes in the ferocious beast galaxy. The earliest source was from a population named as a ferocious beast by Xiao Hei. All creatures in the ferocious beast galaxy are collectively called ferocious beasts, so they do not only refer to animals. There are not only animals, but also insects, and plants among the ferocious beasts. Ferocious beasts are ferocious beasts that are between beasts and insects, and their characteristics are more inclined to insects. The biggest advantage of ferocious beasts is their reproductive ability. If it were not discovered by the dragon clan, the level was still low, and if it was not developed too short after evolution into a population, this ferocious beast with strong potential would definitely gain a place among high-end ferocious beasts after evolution for tens of millions of years.

The characteristics of the dragon beast are absorbed by most of the dragons, and after optimization, they are also perfectly reflected in their use. The only disadvantage is that they look a little ugly - this is Sun Jing's original words, but this flaw is really difficult to improve. I can only find more beautiful animals in the future, which will not affect the appearance of the ferocious beast species to develop.

When Han Zhen was riding the crystal dragon approaching the mother beast, he happened to meet a circle of newly hatched dragons. Han Zhen intercepted two of them, sensed them for a while before letting them go. He also teleported to the mother beast and used his spiritual sense to record the various reactions of the mother beast's body. He also randomly selected various incubation rooms with different birth time and size to obtain relevant data records.... Han Zhen is very skilled in these tasks and does not take an hour.

The newly hatched crystal dragons still need to go through a growth period. Han Zhen thought about letting them spend this time in the incubation room. Anyway, the IQ and functions of the crystal dragons are all achieved by the inheritance of the mother beasts, but in the end this improvement plan was rejected because if you do so, the requirements for the mother beasts will be increased too much, and the number of the mother beasts will also be expanded to dozens of times. The result will lead to huge troubles in management. After all, the fewer mother beasts, the easier it is to manage, and it is not easy to get into trouble.

The new crystal dragon will not be idle during the growth period. Although it is impossible to do high-intensity work such as mining and long-distance transportation, the work that can be done within the capacity, such as being responsible for sorting materials in the space, making arrangements, and carrying easy work in the space, is still competent. Now what Han Zhen sees is such a scene. The ground and walls are running in the space, and the young crystal dragons in the growth period are all young crystal dragons in the growth period.

Han Zhen and his group transferred to a new "villa" crystal earth dragon through the tubular connection channel extended by the "villa" crystal earth dragon. Its size is larger and rougher than the original one, and its defense design is more stable and stronger. The reason for this is that the performance of the crystal dragon will vary according to the changes in the depth of the underground and the changes in the external environment. Generally speaking, the shallower of the ground will be smaller and the defense will be weaker and more flexible; the closer to the center of the earth, in order to adapt to the increasing underground pressure, not only will the size increase and the defense will become stronger, but it will also produce corresponding defense attributes according to different environments.

Han Zhen continued to go downwards and checked and recorded the work of the mother beasts in various places. Han Zhen did it several times and transferred several times. The crystal earth dragon he was riding on now was definitely a giant. The "small" villa also turned into an extra jacket, which was very small in comparison. However, the caves along the way were not expanded because of the sharp increase in the size of the crystal earth dragon. This is for safety reasons. In any case, the danger coefficient is not ordinary high in the depths of the earth ground of the planet, let alone mining internally. We must pay attention and pay attention. The passages did not reduce because of this. After all, the size of the crystal dragon is there, and it will not be able to pass it. This also caused a strong visual impact: the initial caves could allow dozens of crystal earth dragons to go side by side loosely, but after arriving here, they could only become a one-way road for a crystal earth dragon!
Chapter completed!