Chapter 91: Papermaking Ice-Making Method

n't even smelt steel, let alone extract metal titanium from ilmenite.And even if it could actually be refined, what use would it haveIn the Great Qin dynasty, ordinary steel was already sufficient.Eve...It is now the middle of the month.

The night was deep, a round moon hung high in the sky.

Inside the Yang family home, everyone sat together, watching Xiao Jiu calculate.'s too expensive, the people can't afford it, so it doesn't really matter.Just like in the imperial court, besides paper, they also used parchment, silk, and fabric. The problem is that these material...