From the top of the watchtower - it's not very high, but it's up on a little bit of a rise, and none of the other buildings are very high either - it's easy to get a good view of the city.
Jinye eavesdrops, then gets started building! Given that this is just a shed she will try not to make too many suggestions about earthquake-proofing and guttering and materials selection, since those look like they'd alarm Balsa and the shed isn't actually that important.
She's paying close attention to just how Balsa works; this is nearly her first chance seeing magic and she wants to make sure she understand how it works.
Balsa and Maurabel are actually doing basically the same things - Wood is among Maurabel's elements. They're touching trees and having pieces of them come off already shaped just right, like the tree was all along a three dimensional puzzle. When they want to assemble the pieces they can just make them join up again, no glue or nails. Maurabel has less stamina for this activity than Balsa and taps Balsa to even it out; this involves just a brief fingertip-touch.
Fascinating! Jinye has no magic, but she can assist in assembling the parts even if not in creating them.
Yeah, that'll make things go a bit quicker. The shed is fast and the press will want type that Maurabel will want an Adamant for so it's all right that they aren't quite done by the time she and Balsa are collectively out of magic.
Then Jinye can thank them both! (Excitement!) Do they already know what book to start printing lots of copies of, yet?
"I was thinking one of the primers my mother wrote for her students. She'd be able to give them all their own copies."
"Excellent," she says. (Will this pay for itself? Probably not, but it'll get her partner on her side..) "Will we want to include a leaf in the back, suggesting that if people want books copied they should come to us?" She pauses. "Do you know any booksellers we could recruit, after that, and what they'd specifically want?"
"There's a school scribe, but I think he'd probably resent being put out of a job. I guess we could try to retrain him as a printer. A leaf in the back saying to ask us if you want a book printed seems good though."
"There's no stores that sell books?"
She pauses. "And, yes, we'll want to start recruiting new printers once we've started selling books. Eventually we can sell off this business and get started on a bigger project."
Like FIXING THE WORLD.
"Not that many people can read. And paper is expensive if you aren't a mage making it yourself."
"Well, we'll want to find someone who can buy books," she says, "otherwise we aren't selling much."
"Yeah. It just might be a little slow to start. Can you use it for pictures?"
"It can be done," Jinye says. She thinks a moment "- yes but it'll be more expensive and you'll need an artist to do the picture we're printing."
"Do it how?"
"Make it a single, very big letter," she says drily. "The same way we do any other type, with an Adamant mage shaping the plates."
"Oh, I guess that makes sense. It'll help the kids, I think. I'm sure other people will buy books, I just don't know right away who they are, you see."
"It's very important to help children learn how to read! It's just -" she pauses "- I want to fly."
She smiles, suddenly and fiercely. "I want to make this place have everything my home did and every moment I wait is a moment I shouldn't be waiting - there are real problems and humans and elementals are suffering because I haven't fixed everything yet, and the faster I can get resources the faster I can throw them into fixing this problem at a profit which lets me fix that problem at a profit which lets me delegate fixing this problem to someone else -"
"- and that's who I am."
"...it's like looking in a mirror," mutters Maurabel.
"You're welcome." Maurabel gets up. "Well. We can probably finish this tomorrow, us and an Adamant, and then I can print a primer for the kids and show my mom."
"Excellent, thank you." She nods to Balsa. "And thank you, too."
And Jinye can pass the time telling Bella about other cool technological things they can do. Antibiotics! Compound pulleys! Disinfectants!
(She's doing this in kind of a random order.)
"- how are disinfectants different from antibiotics -"
"You take antibiotic pills or medicines to make you better if the sickness is caused by bacteria, which some but not all diseases are. Disinfectants are used to remove bacteria from surfaces before they get into the body - soap, for instance, is one you might know about." Actually, do they know about soap?