The opening of the hand signifies knowledge and wisdom, the circle motion back and forward represents the coming together of all people in harmony.
The upper palm strike represents the evolution of time.
The raising and lowering of the wrist and palm signifies the sun and the moon and their destiny.
The moving of both hands in unison signifies negative and positive coming to together creating the energy of life.
Moving the palms together up and over suggests the art of breathing is in and out. When you are born you breathe in and when your time comes, you breathe out.
Tora Guchi signifies the four seasons coming and going. Both palms extended up and down suggest Fearlessness, Compassion and Charity.
The last move to finish, which is hidden, suggests holding the jewel of life, which is Enlightenment, Satori or Nirvana.
The stance Sanchin represents the element of ether, communication with heaven and the silent Gods.