What?!

The efficiency and output are not compatible, which means that they have less ore to hand over to the imperial court?

Oro Dai reacted for a moment, and after thinking about the meaning of these words, he was scared out of the white sweat on his back: "Impossible...... It's impossible! ”

He knew a little bit about where the ore would be used.

In recent years, the Science and Technology Agency has built a lot of machines, which are basically steam-powered, and the speed of merchant ships and cargo ships has increased by leaps and bounds

Chapter 300 of "After Clearing, I Bind the Power System" Smuggled Coal Mine is being hit by hand, please wait a moment,

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