It's cute the stuff they carry over from our world into Teyvat.
In case you guys don't know miners used to keep canaries with them and they'd bring the canaries as deep into the mines as they went. That's because if the canaries ended up dying that had to mean there was too much carbon monoxide in the tunnel so they would know to get out.
There are no canaries in Genshin so that's probably why they went with finches but there's also likely no carbon monoxide either. But I did point out that it seems like the Dark Mud and Oozing Concretions are symbolic of crude oil and coal and as we saw with Zhiqiong it is also toxic to humans and causes them respiratory problems.
Now if only Teyvat could adopt nuclear and renewable energy and set an example for us haha. 
Tips and Tricks from a Super Casual Genshin f2p
