The source of the Qi flow comes from the Mountains and spread out through water formation. Qi never comes from man made charms; never has and never will be.
Crystals usage came from western studies and has no relations to Feng Shui.
For more info on how Qi flows within a space, see link for my article. https://www.sofiarelosa.com/…/feng-shui-charms-why-they-nev… www.sofiarelosa.com Youtube Channel: https://www.youtube.com/channel/UCdppIoCO0DpiJcEfcAOTZCQ