Acupressure is the Chinese system of massage based on the concept of "chi", which is considered the essential life force flowing through invisible channels called "meridians". The flow of this energy can affect your physical, mental and spiritual states. In Chinese medical tradition, free flow of chi means harmony and good health. Acupressure is thousands of years old, and popular in China for self-treatment of many ailments. Here's some information about this practice.
https://acupressure.pfueller.net/