This time, with Shen Kun supporting juquanling, there are more than ten young disciples such as Shen Xiu and Zhou Qingyun. They were young. They had been practicing in huanglongyuan Taoist school before. At the age of 16 or 17, they practiced to the middle and late stage of tongxuan realm, and even entered the spirit realm. It is inevitable that they will be proud of standing on all living beings, but after more than a month''s training, they have matured a lot.

    At this time, they knew that since they were in the same realm of martial arts, their strength was still very different. Although Shen Xiu and Zhou Qingyun both stepped into the spirit realm, they were still not the opponents of those old soldiers in the mysterious realm. Even if they can win one-on-one, the experience of old soldiers working together is too rich. In the unpredictable fierce battle, they can still give them rich experience and lessons.

    Of course, Shen Xiu and Zhou Qingyun participated in the actual combat drill with demon crocodiles and grew very rapidly.

    During this period, Chen Hai would also sneak into the bottom of the lake to fight with demon crocodiles every two or three days after recovering his Zhenyuan strength. However, he did not intervene in the defense and warning in Juquan ridge, and handed it over to Wu Meng and Ge Tong for military training.

    Even Su Ling feels worried about this kind of life. She doesn''t know when there is a leak in the warning line set by Wu Meng and Ge Tong, and only when the demon crocodiles directly kill into the stockade can she react. So many ordinary people are bound to die and be injured.

    Finally, Zhou Jingyuan took Chen Hai''s name and couldn''t borrow pills with Tu''s and fan''s spokesmen in Tongbei mansion. The military training ended. Chen Hai personally dived into the bottom of the lake and dragged nearly 30 meters of demon crocodile bones to the lake.

    Even though the demon crocodile has been exhausted and scarred by Chen Hai and more than 200 elite Hu guards during this period of time, Su Ling can''t believe what she saw when Chen Hai can kill the demon crocodile at the bottom of the lake.

    At the same time, Chen Hai really wants to surpass Wu Meng and Ge Tong in the later cultivation of the spirit realm?

    Is this the real strength of the first choice in the northwest region?

    She waited on Chen Hai personally. Chen Hai went to the bottom of the lake and had a fierce fight with the demon crocodile. She waited with clothes and armor on the shore. She knew that Chen Hai didn''t use magic weapons. He only killed the demon crocodile by fighting for two days and nights with the cold frost quenched golden halberd.

    How tenacious is the vitality of the demon crocodile? Everyone has a common goal. Chen Hai''s strength can last two days and two nights. Is he still human?

    Taking Jiaosui pill is so miraculous. Can Chen Hai''s physical strength really be compared with Jiaolong?

    Su Ling didn''t know that in more than 50 days, Chen Hai fought with this demon crocodile for nearly 20 times. That is, when he dived into the bottom of the lake for the 19th time, he had mastered the true meaning of countercurrent. Even at the bottom of the lake with turbulent undercurrent, he had the advantage of rolling against the ferocious demon crocodile.

    However, Zhou Jingyuan wanted to cry without tears. If Chen Hai were not the Secretary Cheng of Tongbei warehouse at this time and could borrow a lot of resources, juquanling would not be able to survive and go bankrupt. The precious materials harvested from the remains of two demon crocodiles may not be able to make up for the consumption that lasted for nearly two months.

    Juquanling owed Tu and fan a large number of pills at this time, and borrowed 600 quenched gold halberds, 200 quenched scales and two troop carriers from Tongbei Dachang. They were almost exhausted, and they needed to wipe out the account a little bit

    Chen Hai doesn''t think so. The resources developed are for use; Only when it is useful can it be turned into invisible strength.

    In this war, the two demon crocodiles killed can collect materials to make up for consumption at most, and even owe something. However, in addition to 200 Hu guards, both personal and battle strength should be substantially improved.

    As far as other resources are concerned, they are definitely worth it.

    Kill the demon crocodiles, and there is no monster in Juquan lake. If there is no wind and waves, the waterway connection with Tongbei mansion will be completely opened to facilitate the transportation of bulk materials.

    At this time, minerals, wood, tung oil, gum, medicinal materials and other products near Juquan mountain and even in the mountains to the west of Juquan mountain can be transported to Tongbei mansion on a large scale, and a large number of grain, conventional iron, porcelain and so on can also be transported from outside the mountain.

    Once this large-scale material exchange is carried out, more ordinary people can be resettled and multiplied in juquanling and the mountains to the West.

    After killing demon crocodiles, in addition to opening remote fishing ports and hunting fish and animals, Lake embankments and river embankments are built along the banks of the lake and many tributaries, and a large number of grain fields can be cultivated. At this time, tens of thousands of hungry people outside the mountain can be guided to Juquan ridge for resettlement. In the past, a large number of lakeside and river valley beaches around Juquan lake could not be reclaimed because of demon crocodiles, let alone fishing in the lake.

    Juquanling wants to develop the resources of the Western foot of Qintong on a larger scale, which cannot be supported by a large number of manpower.

    Just like a large mine, it needs three or four thousand young workers. Now juquanling has only three or four thousand people, including old, weak, women and children. Where can there be so many young workers?

    Many of the mountains in the upper reaches of Tonghe River are rich in gold and iron ore vein areas, but these mountains have been gradually divided by other patriarchal forces, and Chen Hai has no way to reach out to mine minerals there.

    However, over hundreds of years, the ore rocks in these deep mountains have been eroded by years, weathered into fine gravel, and go down with the stream. Eventually, there will be a large number of gold and iron ore sands with relatively high density, which will accumulate in the mud at the bottom of the lake with complex terrain as the Tonghe river flows into Juquan lake.

    The lake mud is actually easier to collect placer raw materials; There are even many natural rare gold and iron deposits at the bottom of the lake, waiting for juquanling people to mine.

    Although there are more abundant resources in the deep mountains and forests at the Western foot of Qintong, the roads are blocked and manpower is scarce. Many resources cannot be developed, but the treasure house of Juquan lake is right under everyone''s eyes and noses.

    After a simple transformation, a troop carrier became a sand dredger. Soon, a ship of lake mud and ore rich in gold and iron ore was dug up, washed and filtered through several previous processes, and then directly sent to the smelting furnace.

    Because the composition of lake mud ore is too complex, it is much more difficult to smelt than ordinary iron and copper. The smelting furnace even needs to be smelted into a large flame collecting symbol array, and the ore can be burned and melted only after the temperature of the smelting flame is greatly increased.

    If only ordinary iron is refined, the cost will be too noble, but it is precisely that the composition of lake mud ore is too complex, and the output is quenched gold iron.

    Because the ore veins flowing through the upper stream source of Tonghe River are fixed, the composition of lake mud and ore sand is complex but very stable, and the composition of quenched gold and iron is also extremely stable.

    Watching a furnace of quenched gold iron cast directly into shape, but repeatedly forged to make the internal composition evenly distributed, Zhou Jingyuan felt those polished but already shaped quenched gold halberds, spears and scales, all excited to shed tears.

    Here, the smelting cost of gold quenched iron is more than ten times higher than that of ordinary iron, but it is less than a quarter of the price of gold quenched iron obtained by Zong valve and zongmen by infiltration.

    The rich mineral lake mud accumulated at the bottom of Juquan lake will not be used up in a hundred years. What a terrible wealth is this?

    At this time, Zhou Jingyuan was convinced that Chen Hai had chosen juquanling after careful consideration, and that he came to the lake mud and mineral sand at the beginning -- where are the two demon crocodiles qualified to be compared with the lake mud and mineral sand full of holes and valleys.

    But he didn''t know. How did Chen Hai know that the lake mud and mineral sand were so precious?

    Chen Hai naturally won''t explain the formation principle of alluvial placer to others. This is not a profound knowledge on the earth. He will learn geography in junior and senior high schools, but in Yanzhou, it is a strange geological exploration that is unknown or monopolized by only a few Zong valves.

    Of course, Juquan lake can be enriched with placers. There must be a large number of gold and iron veins in the upstream. It''s just that nature has gathered gold and iron ore to Juquan lake.

    Zhou Jingyuan was too aware of the significance of their large-scale smelting of quenched gold and iron in juquanling.

    Compared with ordinary precision forged iron, the properties of quenched gold iron have been improved by leaps and bounds in all aspects.

    Xuanxiu''s body protection spell, magic weapon and spirit armor have not unlimited defense power, but ordinary iron arrows. Their penetration power is limited. They have to shoot hundreds of bows and crossbows together to form a repressive arrow rain. Only in this way can they pose a threat to the Yellow level protective spirit armor and shield at close range.

    The penetrating power of the quenched gold arrow cast by the quenched gold iron is seven or eight times that of the ordinary iron arrow; If you engrave Dao Zhuan that can improve penetration, it will be more powerful.

    The iron arm bow made of finely forged iron can only shoot three or four hundred steps; Chen Hai''s two iron arm bows made of gold quenched iron shot 1500 steps, and the arrow potential did not decay slightly.

    If you replace it with a large bed crossbow and cart crossbow, it will have the power of piercing mountains and walls.

    At the same time, the quenched golden halberd is a war soldier that can be used in the cultivation of spirit and even the Ming Qiao; The protection of quenched gold shield and quenched scale armor cast with quenched gold iron is far beyond that of ordinary precision forged iron armor and iron shield.

    However, the output of quenched gold and iron is too small. Chen Hai cooperates with Li Xianghai to kill Yulong Mountain and make his first achievement. Only then can he be given a pair of quenched gold halberd and quenched gold scale armor; Even at this time, juquanling''s 200 elite can''t do a pair of quenched gold armor.

    However, due to the fierce fight with demon crocodiles for nearly two months, more than 500 pairs of quenched gold armor borrowed from Dacang branch in Tongbei were damaged. No wonder Zhou Jingyuan was anxious to hang.

    Now, don''t worry about not having enough quenched iron to repair these armours. After smelting a large amount of quenched iron, juquanling can build mechanism chariots and other weapons that can really rush into battle on the battlefield.

    The car body made of precision forged iron plate is extremely heavy and has poor defense. It is replaced with quenched gold iron. The weight of the car body is reduced by more than half, and the protection can be increased by five or six times.

    At this time, juquanling foundry is mainly used to build soldier armour for Dachang in Tongbei. However, the building materials drawn by Taiwei mansion or Xiyuan Army General Manager mansion, precision forged iron and rare gold and iron such as black iron, black placer gold and red pulp copper are separated and sent to juquanling to be refined into quenched gold and iron by infiltration casting.

    At this time, juquanling can refine quenched gold and iron on a large scale, but it doesn''t matter whether it''s precision forged iron. The Taiwei mansion and the general manager''s mansion of Xiyuan army can pull out rare gold and iron such as black iron, black placer gold and red pulp copper, so that they can accumulate a little bit. At that time, they can forge armor breaking arrows with stronger power and penetration, which frighten those who are strong in Taoist Dan territory.

    The casting of armor breaking arrows does not have much technical content, but the fist size xuantai refined iron or black placer gold, mixed with other materials, is enough to refine a yellow top-grade spirit sword, but only two or three armor breaking arrows can be cast. Which clan in Yanzhou is willing to cast armor breaking arrows on a large scale?

    The wolf chopping sword given by Chen Haide''s Taiwei''s residence is a Xuan soldier of Xuan level. The real black placer gold in the black steel casting material is enough to cast more than ten armor breaking arrows.

    Juquanling now monopolizes the armour supply of the Xiyuan army. Even if the Taiwei mansion and the Xiyuan army manager mansion supply a small amount of rare gold and iron every year, a little makes a lot, and a batch of armour breaking arrows can be forged every year.

    Zhou Jingyuan calculated that the back mountain must be designated as a forbidden area, and all irrelevant people are forbidden to enter and leave.