How many grams does cinnabar use to ward off evil spirits? What kind of cinnabar is the best?

Generally, people who use cinnabar to ward off evil spirits have weak magnetic fields.

I heard that if I used cinnabar directly when I was a child, I used 3 grams.

But if you buy jewelry made of cinnabar,

Very particular. You have to choose bracelets with high cinnabar content.

Pendants or something. It is said that the sincerely wished cinnabar is excellent.