Li Pi Quan (力劈拳) — Eight Step's 'Force Chop'

力劈拳 (Li Pi Quan, "Force Chop Fist") is one of the most recognizable forms in the Eight Step Praying Mantis (八步螳螂) curriculum brought to Taiwan by 衛笑堂 Wei Xiaotang in 1950. The name names the action: 力 li (force / explicit strength), 劈 pi (to chop, as with an axe). The form drills the cutting-down strike — driven by waist rotation and the stamping advance — across a sequence of mantis hooks, sweeps, and percussive setups.

Eight Step's Li Pi is NOT on the Wong Hon Fan Seven Star Mantis curriculum (Wong's books contain many 劈軋 / 劈捶 / 劈掌 postures inside other forms, but no standalone 力劈). It is one of the branch-distinctive Eight Step forms.

What 力劈 means in the form

力劈二字乃用力劈擊之意，而劈則是以斧切斷之意 — "Force Chop" means a powerful chopping strike, with 劈 carrying the sense of an axe cutting through.

The form's signature action is the chopping fist — descending from above with the full body weight committed via the stamping advance step (踏腳) and the waist twist (扭腰) — striking the opponent's head, shoulders, or collarbone. It is among the most explicitly power-issuing forms in the mantis curriculum.

The three living transmissions

Per the Taiwan Bajiquan Association teacher Hsu Chiu-Te's detailed treatment (hsu363.pixnet.net), three branches preserve Li Pi Quan:

The Wei Xiaotang 8-Step 38-posture script (sample opening):

中平雙蓄式 → 螳螂捕蟬式 → 採手窩肚捶 → 泰山壓頂式 → … → 右前掃蹚腿 (closing)

The full posture lists for both the 28- and 38-movement Wei Xiaotang variants and the Wutan variant are on the Pixnet blog cited above.

What the form trains

• Stamping advance (踏腳) as the engine of the chopping strike — the foot lands with weight, the chop completes at the same instant

• Waist rotation (扭腰) unifying the chop with the body, not the arm alone

• Mantis hook setup (採手) before the chop — sticking, pulling, then chopping into the opening

• Closing kick (掃蹚腿) — a low sweeping leg as the form's exit

Videos

• 八步螳螂拳 力劈拳 (clean demonstration) — primary video reference

• Form scripts and supplementary videos linked from hsu363.pixnet.net

• The Wei Xiaotang lineage video archive on 八步功夫學苑 (Eight Step Kung Fu Academy) YouTube channel — see the Eight Step Mantis page for the full lineage channel index

See also

八步螳螂 Eight Step Mantis — Li Pi's branch context

Wei Xiaotang (衛笑堂) — the Eight Step disseminator

Praying Mantis (螳螂拳) — the style overview

崩步 Bung Bu — Seven Star's foundational form (comparative reference)

Sources

[1] 衛笑堂 Wei Xiaotang, 實用螳螂拳秘笈 (1977; Yiwen 逸文 2011 reprint, ISBN 9789866329487) — the primary published source for the 8-Step Li Pi script. In copyright. Sanmin listing: sanmin.com.tw.

[2] Hsu Chiu-Te (許秋德 / 八極拳協會), 螳螂拳力劈拳譜與影片 — Taiwan Bajiquan Association blog with the multi-lineage posture script and comparative analysis: hsu363.pixnet.net.

[3] 八步螳螂-力劈拳 — independent script at 健武學會 (blog.xuite.net).