Skip to content
Written by Master Wong · 15 years of Tai Chi & Qigong practice · Reviewed by WikiQigong Editorial Team

Fa Jin (Issuing Force)

What it is: Fa jin (發勁, fājìn) is the sudden, short, whole-body release of trained force (jin) in tai chi — an explosive push or strike delivered from a relaxed, rooted structure rather than from local muscle effort.

Literal meaning

Fa (發) means "to issue, emit, or release." Jin (勁) is "trained force" — coordinated, refined power (see jin). Together 發勁 is literally "issuing jin": the moment trained force is released outward in a short burst.

Historical context

The term belongs to the classical vocabulary of the Chinese internal martial arts. In tai chi it appears in the traditional writings describing how the body should be "rooted in the feet, developed through the legs, directed by the waist, and expressed through the fingers" — the ground-up pathway along which jin travels. Like much of tai chi's technical language, its precise historical dating is not firmly documented and should be read with the same uncertainty as the art's own origins (see tai chi).

Traditional interpretation

Traditionally, fa jin is contrasted with li (力, raw muscular strength). Raw strength is local, tense, and easily resisted; jin is whole-body, relaxed, and sudden. The classical image is of a whip or a wave: force is generated through the legs and waist and "issued" through a point — the palm, fist, elbow, or shoulder — in a brief, relaxed burst. The release is a turning off of held tension at the right instant, not a clenching.

Modern explanation

Read without the traditional language, fa jin is a biomechanical power transfer: force is generated from the ground through the legs, transmitted through a relaxed but connected torso, and delivered through the point of contact in a short, coordinated pulse. The "relaxation" is not limpness — it is the absence of the antagonistic tension that would brake the movement and slow the transfer. The result looks sudden and effortless precisely because the power comes from timing and connection, not from size.

  • Jin — the trained force that fa jin releases.
  • Li — the raw strength fa jin is distinguished from.
  • Song — the release quality that makes the burst possible.
  • Rooting (Gen) — the ground connection the force travels through.
  • Tui Shou — the partner exercise that trains toward it.

Common misunderstandings

  1. "Fa jin is a magic or supernatural power." It is a trainable biomechanical skill — coordinated force transfer, not mystery.
  2. "It is hitting as hard as you can." The point is trained force from a connected body, not brute strength; tension usually defeats it.
  3. "You must tense up at the moment of release." The opposite — the release comes from not tensing, letting coordinated force travel through.
  4. "It is only for fighting." The underlying skill — relaxed, connected, ground-driven movement — is the same quality that makes the slow form healthy and balanced.