Hello! I have recently discovered this old mandarin song that can be heard in the 1979 movie 'Secret Shaolin Kung Fu' starring Lee Yi Min.
(Plays from 2:38 to 4:18)

The movie can be found here: https://youtu.be/Cta_lO2c81Q? (Plays from 2:38 to 4:18)

Upon asking around, I was told that the song is a very old mandarin song sung by someone with a canto accent. Most of the people I've asked, especially the elderly, recognize this song but couldn't remember the name of the song. Therefore, it is safe to assume that the song is not exclusive to the movie and as many in my circle have recognized its existence.

I hope that someone would be able to tell me the name of the song. Alternatively, I would also like for someone to type down the what the singer says in the song, if possible, in Chinese symbols or pinyin in order for to try and trace the title of the song through the lyrics. Massive truck load of cookies awaits those who are able to help me identify this song. Thank you and good day!

Yep and it failed.

Yep. Even some of my old family members said it could even be older than them!

New info found! (20/1/2021)

Composer (Supposedly): 蔣榮伊

Singer (Confirmed): 余天 Yu Tien

Song is still not found.