Peace: Olive kernel has the effect of keeping peace in traditional Chinese culture, and wearing it on the body can make a person's character become more peaceful and strong, so olive string was an exclusive object for the princes and nobles in ancient times.

Exorcism and peace: olive kernel strings are the same, long-term wear them on the body, have the effect of warding off evil spirits and keeping people safe for life.

For the record, the above is for reference only, please do not blindly superstitious.