On the filmcredits of Snuff Bottle Connection the name of Yuen Biu 元標 appears.
Yuen Biao's characters, 元彪, are not on the credits. He appears at least four times in this film: first in the beginning at the eatery, then in the casino fight, then in the first and in the second ambush of Yip Fei Yang. As far as I know he has more appearences then Chin Yuet Sang or Yuen Kwai who's names are on the filmcredits.
Isn't it likely that Yuen Biu/Yuan Biao = Yuen Biao?