What's the use of jade hanging on the chest in Feng Shui?

Jade has many functions, such as "removing middle heat, relieving annoyance, helping voice and throat, nourishing hair, nourishing five internal organs, calming the mind, dredging blood vessels and brightening eyes and ears". Polished jade will accumulate efficacy and form an electromagnetic field, which will resonate with the human body when worn on the body, thus promoting the coordinated operation of human functions.