"The next step is the key. I wonder what changes will happen from the city hall to the main city?"

Qin Zheng thought to himself, and was full of expectations for the continued upgrade of the city hall.

Unlike a farm, if you want to continue upgrading after upgrading to level 9, you must build a city hall. The city hall has no such restrictions and can be upgraded infinitely. As long as Qin Zheng's resources, that is, source wood and source metal, can be upgraded continuously.

Qin Zheng did not hesitate and directly continued to upgrade the city hall.

Main city: Level 0, the core building of the territory, has the effect of gathering luck and can convert the luck into source gold. The level 0 main city can convert the luck every day, generating 1,000 source gold, and also has the ability to convert the source gold into source wood. The conversion ratio is one to one, and can be upgraded to level 1 main city. Required conditions: Source wood 20,000, Source gold 20,000.

Upgrading to the main city, the amount of source gold that can be generated every day has increased tenfold, and there is one more function. This function is very useful to Qin Zheng. This function is to transform source gold and source wood into each other. This is a very important function for Qin Zheng.

After all, the source wood is converted from actual matter, and the conversion ratio can only obtain a source wood by one. If you want to obtain a large amount of source wood, you will need too many materials, tens of thousands or hundreds of thousands. It is not difficult to get Qin Zheng's identity, but if Qin Zheng reaches a quantity of source wood of more than 100 million, if Qin Zheng continues to convert the material, it will attract great attention.

At that time, it will inevitably arouse suspicion from others. Those who are malicious will never let go of those who explore Qin Zheng's secrets. Being investigated in this way will be very unfavorable to Qin Zheng before the absolute power of self-protection is not strong enough to be investigated.

With this transformation function, Qin Zheng can save a lot of trouble.

Compared with matter, the acquisition of energy must be much hidden. As long as Qin Zheng pays attention, he will basically not be discovered that he converts energy into source gold in large quantities.

"One thousand source gold a day, ten days is ten thousand source gold, one hundred days is one hundred thousand source gold, and one hundred days is one hundred thousand source gold, and one year is 365 thousand source gold. In this way, even if I do not convert energy and matter into source gold and source wood, I can slowly accumulate source gold and source wood to build and upgrade superpower buildings."

Qin Zheng thought happily.

However, after Qin Zheng upgraded the city hall to the main city level 0, he did not continue to upgrade the main city. Because the upgrade required too much source gold and source wood, so he could not upgrade much. Therefore, Qin Zheng began to prepare to build other superpower buildings.

With the existence of the main city, Qin Zheng's ability to build other supernatural buildings was unlocked and no longer restricted. The farm can continue to be upgraded, and other buildings can be built.

At this time, the building that Qin Zheng wanted to build was not a ranch or upgraded farm, but a gold mine and a logging farm.

Gold mines and logging yards are also two mutated superpower buildings. Among them, gold mines are superpower buildings that can generate source gold, and logging yards are buildings that can generate source wood. These two buildings are basic buildings and must be built.

Qin Zheng’s superpowers to build superpower buildings require consumption of source gold and source wood. Therefore, the building that produces source gold and source wood is the basic building that must be built.

Therefore, Qin Zheng prepared to build gold mines and logging farms.

Gold mine: Level 0, a building that can produce source gold, 100 source gold can be produced every day, and upgrading to the next level requires: source gold 1000.

Gold Mine: Level 1, a building that can produce source gold, 200 source gold can be produced every day, and upgrading to the next level requires: source gold 2000.

Gold Mine: Level 2, a building that can produce source gold, can produce 300 source gold every day, and upgrading to the next level requires: source gold 3000.

...

Gold Mine: Level 9, a building that can produce source gold, can produce 1,000 source gold every day, and upgrading to the next level requires: source gold 10,000.

Then continue to upgrade.

Lower-grade gold mine: Level 0, a building that can produce source gold and spirit stones. 10,000 source gold and 100 low-grade spirit stones can be produced every day. Upgrading to the next level requires: Source gold 20,000.

Lower-grade gold mine: Level 1, a building that can produce source gold and spirit stones. 20,000 source gold and 200 low-grade spirit stones can be produced every day. Upgrading to the next level requires: Source gold 30,000.

...

Lower-grade gold mine: Level 3, a building that can produce source gold and spirit stones. 40,000 source gold and 400 low-grade spirit stones can be produced every day. Upgrading to the next level requires: 50,000 source gold.

Upgrading into a lower-grade gold mine can not only produce source gold, but also produce a by-product, that is, spirit stone. Although it is only a by-product for gold mines, it is a truly valuable treasure in the era of spiritual energy recovery.

In the era of spiritual energy recovery, over time, over the world, due to spiritual energy, a treasure like spirit stone was born.

The spiritual stone contains the ability of spiritual energy, which can not only assist human cultivation, but also be used as energy.

In eight years, human technology has long discovered the existence of this energy. If spirit stones were not temporarily rare, spirit stones could even replace oil and other energy sources and become new energy for humans.

Even if oil has not been replaced for the time being, spirit stones still become strategic items of various countries, and each spirit stone is a very precious treasure.

Lower-grade gold mines can produce spirit stones, and they are just by-products. Just such a ability is already a very amazing building, not to mention that source gold is the main product it produces.

"I don't know what kind of functions will be born if the logging farm is upgraded to the lower product, or if there is an additional treasure that can be produced."

With Lie Zi of the gold mine, Qin Zheng was even more expectant about the logging farm. After upgrading the lower-grade gold mine to a level 3 lower-grade gold mine, Qin Zheng stopped upgrading the gold mine and began to build a logging farm.

Timberyard: Level 0, a building that can produce source wood, 100 source wood can be produced every day, and upgrading to the next level requires: Source wood 2000.

Timberyard: Level 1, a building that can produce source wood, 200 source wood can be produced every day, and upgrading to the next level requires: source wood 3000.

Timberyard: Level 2, a building that can produce source wood, 300 source wood can be produced every day, and upgrading to the next level requires: Source wood 4000.

...

Timberyard: Level 9, a building that can produce source wood, 1,000 source wood can be produced every day, and upgrading to the next level requires: source wood 10,000.

Lower-grade logging farms: Level 0, a building that can produce source wood and fine iron. 10,000 source wood and 100 fine iron can be produced every day. Upgrading to the next level requires: source wood 20,000.

There is also an additional by-product of low-quality logging farms, which is fine iron.

Essential iron is a special material. Through special treatment, the substance of fine iron can be extracted from iron. Only with each iron, can one gram of fine iron be extracted. Therefore, although fine iron is an ordinary extraordinary material in the extraordinary era and is a basic extraordinary material, it is also one of the relatively precious materials. In the extraordinary era, fine iron can be used in many places in the extraordinary field.

Therefore, the material of fine iron is definitely a material with great demand in the future. The superpowered building low-quality logging yard built by Qin Zheng is absolutely very unfair to produce fine iron. Moreover, in addition to starting to consume source wood or source metal construction, such a building can continuously produce source wood and fine iron after construction, which is definitely very unfair to exist.
Chapter completed!