Sei Hi Ki is useful for emotional and mental healing. The closest translation of the Japanese is Holy Peace.
So you draw the Sei Hi Ki Reiki symbol when your client is having emotional or mental issues. It helps calm, balance and soothe. As well as providing the spacious loving support that your client needs in order to heal on this level.
Sei hi Ki is useful for trauma, shock, heartache, grief, depression, sadness, and addiction. You can use it for blocked or psychosomaticised emotional issues. When the body gets sick from unconscious emotional and mental states. As well as for turmoil, and any state of imbalance or disharmony.
Many people believe it unifies the left and right brain. This makes sense actually because it brings a state of peace and connection with Divine truth. Since it connects the client with the Sacred. In this state, the Mind is beyond the brain. And beyond both attachment and aversion. But this is material for my next blog on it’s spiritual meaning.
My Reiki teacher, Leonard Keen, taught me that the Sei hi ki symbol helps to transfer information between the healer and the client. So it helps to open a circuit of communication between two minds. I’ve always found this useful as an assumption when working, so it was a very useful teaching.
Many people also like to use it as a protective symbol for a place. And although this is a modern idea, as far as I can make out, it would make sense. It does feel right to my sense of the symbol and it’s energy. Try for yourself and see how it feels for you.
As always, my favorite Reiki theory teacher James Deacon is very much a major source of understanding, information and insight. Here is a link to his page on Seiheiki: Reiki Symbols
From here you can explore in depth.
This is a link to the Japanese translation and one way the symbol may be written in Japanese. Play to hear the Japanese pronunciation: 聖平気.