Lan Yan born in 1986/1990 couldn't be in 1969 film.

Lan Yan ??
http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng

Added
Lam Yin ??(1)
http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng
Joys of Love on a Spring Night (1969)

Could possibly be an alias or HKFA transcription error for Lam Yin ??
http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng