Same movie (correct year is 1968):

https://hkmdb.com/db/movies/view.mhtml? ... ay_set=eng

and

https://hkmdb.com/db/movies/view.mhtml? ... ay_set=eng

One source:

https://www.tfi.org.tw/Publication/Publ ... tionId=131

I'll merge the movies soon if no one else wants to do it before me.

Merged:

小情人逃亡 (1968)
Lovers Flee
Alias: Young Lover's Escape
Origin: Taiwan
Language: Mandarin
Genre: Drama

Director
Chang Ying (2)

Screenwriter
Chao Chih-Cheng

Producer
Lin Chun-Chun

Cast
Pai Hung (1)
Ulysses Au-Yeung Jun
You Long (1)
Tsao Chien
Chin Liu
Shih Yin-Yin
Yen Chung
Wu Feng-Feng

Production Company
Chung Tien Film (H.K.) Co.

Cinematographer
Wang Jun

Editor
Shen Yeh-Kang

Music
Lee Lam (3)

Production Manager
Chang Ying (2)

Filming Location
Taiwan

and

小情人與大逃犯 (1978)
The Young Lovers and The Escaped Prisoner
Origin: Taiwan
Language: Mandarin
Genres: Romance Drama

Director
Chang Ying (2)

Cast
You Long (1)
Wu Feng-Feng
Ulysses Au-Yeung Jun
Pai Hung (1)

Production Company
South Sea Film Co.

Filming Location
Taiwan

I chose The Young Lovers and The Escaped Prisoner as main English title because I have no poster/images with Lovers Flee as English title.
I chose 小情人逃亡 as main chinese title because that is the first 1968 title also on sources like that one:

http://app2.atmovies.com.tw/film/fVcmb5050425/

I am open to corrections