This is a clip of Hsiao Chun (Tony Liu) stabbing Hsiu Chien (James Tien) in the head (from 'The Big Boss').
Note that this may not be the most accurate way it was presented, but something close anyway. No audio from the 1971 existed to accompany the video, so it's not a fault on your side.
It was initially included in the 1971 versions (Mandarin and probably the majority, or all export versions in Engl
ish e.t.c), but it was eventually deleted from all prints (including 1973 National General Pictures/1983 Golden Harvest versions e.t.c) and the scene does not exist in a 're-instated back into the main feature' form to the public. However, audiences in England reportedly got to see it in 1979, as we
ll as a an unusual 'Lively Dubbed' 90's Thai broadcasting (reinstating some missing scenes, but missing others common in today's versions).
1971 Super-8 trailers got the scene (HKL recently released the English export international version of it on their Platinum Edition DVD).
Sources include Fort
une Star (copyright of the majority of the source belongs to them too) and a super-8 Spanish trailer (which has no copyright currently AFAIK) - courtesy of Falkor.
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4 great scenes from this movie in cluding this one
answer why did they do it