What ebony ward off evil spirits
Some people say that ebony has fragrance, ebony has no fragrance, and only green ebony has strong fragrance, which is wrong. "Holy ebony" is green ebony, not ebony. But ebony wood is hard and not easy to corrupt, so it is said in religion that it has the ability to ward off evil spirits.
Regarding the wearing of sandalwood, wooden things are actually not easy to wear, because wood is afraid of sun exposure, water immersion and frequent washing. On the one hand, it is easy to age and crack wood, and on the other hand, wood is soft and easy to rot if it is not careful. You can still wear your hands if you sweat less, but you'd better take them off when doing heavy work. Because wood is soft, wooden bracelets will absorb human body's oil and sweat, so after wearing for a long time, the surface of wood will become smooth and the color will change, and some people think it is beautiful.
As for opening the light, only Buddha statues and statues can open the light, and others are called "blessing". The so-called blessing is to purify and install mantras (that is, to put the magical power of mantras on the things to be blessed), so that this thing has magical power, which is to ward off evil spirits and make money in popular terms. In geomantic omen, it is recommended to take new objects and use them after opening them. So it's better to wear a lamp first. It's no problem to wear it in the lamp.