Sevenstar:
All of these movies have been around for a long time, mid-1970s to early 1980s. Most of them released under Wu Tang Collection have been retitled to have the name "Wu Tang" in them. The group Wu Tang Clan takes the name obviously from Wu Tang mountain, site of Taoist martial arts, but their nicknames are based on old kung fu movie titles or characters. I watched a lot of these films in theatres many, many years before the group Wu Tang Clan was ever formed.
Jim