ID Me new cast page: Great Boxer (1972)

[heinz Germany]

BTW: First onscreen appearance of John Liu Chung-Liang
http://hkmdb.com/db/movies/view.mhtml?i ... ay_set=eng
Couldn't make a better capture but I am very confident that Yeung Hung (1) was in it - but under which alias?
There were several gweilo fighters (At least 5 or 6) but the quality was too bad.. But who is Ding Fung and the both "leading" Girls??