"The Wounded Heart of God: The Asian Concept of Han and the Christian Doctrine of Sin" by Andrew Sung Park is not light bedtime reading. Yet, I think this is one of the most influential theological books that I have read. The thorough articulation of the concept of "han" fills the gap of what I have noticed in trauma studies and trauma healing resources.
He poured the bowl full of water, then held it out, balanced on his palm, fingers angled down and away from the thick bronze base. Slowly, he moved the wooden mallet around the edge. Expecting the resonance of the singing bowl, I was shocked to see sparkles of water emerge from the rim. As he continued, water suddenly splashed up, bursting into the space above the bowl, and drenching his face and front. Laughing, he pointed out the obvious: with water in the bowl, the energy of resonance became visible.