Lin Yun, a science and engineering student, travels back to ancient times and becomes a member of a collateral branch of the royal family.

He saved three sinners and beautiful women, chose a poor and desolate fiefdom, and was burdened with a huge debt!

It was a perfect start for Lin Yun, but he said those were minor issues.

Set up the blast furnace! Start steelmaking!!!

Today, I, a time traveler, will show you natives how steel is forged!