Riolu thrusts its palm forward and strikes the opponent's midsection. As it does, it fires a beam of energy from its hand, causing the opponent to fly backwards. When it shoots the energy blast, two rings of energy are released behind it.
The Japanese name of the move is based on a term used in Chinese martial arts, especially involving internal energies and use of explosive force. In Japanese, the term Fa jin/Hakkei often translates to "release internal power".