Rich and powerful

Lin Yun, a student of science and engineering, traveled to ancient times and became a collateral child of the royal family.
Saved three beauties from sinners, chose a poor fief, and was burdened with huge debts!
It was a messy start, but Lin Yun said that it was all a small problem.
Set up a blast furnace!Start making steel! ! !
Today, the traveler will let you natives know how steel is made!

Main characters: Lin Yun, Lin Wuyue,

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