The Craft Department is currently researching two items: cement and glass.
Cement is only at the project initiation stage and has not been heavily invested in research because Chen Jie does not need to engage in warfare at the moment. If needed, this kind of cement would be a secret weapon for rapidly constructing city walls and fortresses, making it a strategic resource.
Therefore, it is merely initiated and not being utilized.
On the other hand, glass is something Chen Jie plans to devote more effort to developing, with the goal of making money.
Glass in this era closely resembles a substance known as Liu Li.
The relationship between this glass and Liu Li is similar to the difference between synthetic diamonds and natural diamonds; that is, you cannot tell them apart with the naked eye.
Yet Liu Li in this era is extremely expensive.
Its value is even on par with gemstones, and it can be more expensive.
