Where to find glass bells? (Genshin Impact)

On the rocks, I still have them on the mini-map were shown with a white glove

https://i.imgur.com/TGvs5iX.png

https://i.imgur.com/sETh23V.png

Qaxeme
I only found two, and the third where?

https://genshin-impact-map.appsample.com/#/