ID me: Dangerous Youth - 危險的青春 (Taiwan 1969)

[heinz Germany]

https://hkmdb.com/db/movies/images.mhtm ... ay_set=eng

[heinz Germany]

I added the uncredited Chiang Tao, Su Chin-Lung, Pai Yu (1) before
& Wu Fei-Song (today) (hope I made no mistake anyhow) Since some of them
don't had any picture from that earlier stage of career yet...