Xiao Fei led everyone into a resource warehouse, and then used the management authority to open the door of this warehouse...

As the iron door of the warehouse opened to both sides, countless piles of materials were revealed inside.

Tan Chu walked in quickly, happily wanting to see what the finished product of black oil would look like?

Soon, under the guidance of Xiao Fei, he came to the innermost part of the warehouse and looked at the wooden barrels piled up all over the wall...

"Boss, here is one of the props refined from black oil, take a look." Xiao Fei excitedly led Tan Chu to a wooden barrel and opened the lid...

I saw that the wooden barrel was filled with black liquid, which immediately aroused everyone's curiosity...

Blazing Crude Oil: A special resource item that has the property of being intensely incinerated when exposed to fire, and can be used as a power source for the Mechanic prop.

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Blazing Crude Oil?

The power source of the mechanic's props...

Looking at the prop attributes introduced by the system, Tan Chu's eyes suddenly lit up, and he seemed to understand some of the situation...

This blazing crude oil purified by black thermal oil can actually be used as a source of power!

In other words, there may also be mechanical props in the divine realm such as real cars, trains, etc., that need this blazing crude oil to power them?

This is a remarkable discovery, no wonder Fang Mo has this precious resource, treasured like a treasure...

"Xiao Fei, is this crude oil burning powerful?" Tan Chu hurriedly asked.

"Boss, we have experimented with this kind of crude oil, as long as you touch it with fire-based magic or props that emit flames, it will immediately burn strongly, and after a barrel of oil is burned, the flames will last for half an hour!" Fei replied with a smile.

Yes...

The players collectively marveled that a barrel of oil could burn for half an hour, making them all feel incredible...

"How much of this blazing crude did you make?" Tan Chu asked excitedly.

Listening to Xiao Fei's explanation, an excellent plan for defending the city suddenly popped up in his heart...

If you dig a trench outside the city, fill it with these black oils, and then light them when the demons attack the city, just get close to the walls...

The effect is even more shocking!

It's just that this method of defending the city is a bit too expensive...

These precious fire oils were burned like this, and Tan Chu felt a little distressed.

"Boss, our mechanic detachment has been extracting thermal oil non-stop, and then divided into a group of people to refine these materials, and after this time, a thousand barrels of such blazing crude oil have been made." Xiao Fei laughed.

"Only a thousand barrels ... That's not enough, so let's do it for three days, you mechanic players don't do anything, just collect and refine it, and I need to see 10,000 barrels of this oil in three days. Tan Chu said.

"Ahh Boss, 10,000 barrels is a bit too much..."Xiao Fei's mouth opened wide in surprise and was ordered by the boss