It took decades of technical breakthroughs to get to this point, from intricate wirework and robotic cameras to CG legs floating in zero gravity.

历经几术突破才达到现在程度，从复杂电线和机器人摄像头，到CG术以及零重力漂浮。

Narrator: Wirework, or " wire-fu, " has long been a signature of kung fu movies, with OG Hong Kong films using wires so thin they were invisible on-screen, even if they sometimes broke.

旁白：电线， 或“wire-fu” ，长期以来一直电影标志，OG 香港电影使用电线非常细， 即使它们有时会断裂， 也无法在屏幕上看到。