"Cheen Si Sau", which may be figuratively translated as "spiral hand" but is often literally and badly translated as "cocoon hand", is a formidable chin-na technique to break an opponent's wrist when he attempts to grip your hand

Grandmaster Wong demonstrates a legacy of Uncle Righteousness and explains its finer points. This legacy consists of only a few simple movements, namely hanging fist, thread hand and thrust punch, but which had been effectively used by Uncle Righteousness in his numerous fights in the past. Grandmaster Wong also explains in some details what should be done if your attack has been gripped by an opponent.