added 39 pics to that movie at
https://hkmdb.com/db/movies/images.mhtml?id=5391&display_set=eng

I think the following two people are probably these people.

阮鳳 Yuen Fung

https://hkmdb.com/db/people/view.mhtml?id=18335&complete_credits=1&display_set=eng

向展偉 Heung Chin-Wai

https://hkmdb.com/db/people/view.mhtml?id=17932&complete_credits=1&display_set=eng

Tagged 7 images including Yuen Fung

I always thought SB-Actor 21 could be 向展偉 Heung Chin-Wai, but now I think you could be right with the kid because that one

https://hkmdb.com/db/movies/image_detai ... ay_set=eng

could be the same kid as in TIGER.
I must check the trailer of BLACK GUIDE (my most wanted movie number 1) if the kid appears.

https://hkmdb.com/db/movies/image_detai ... ay_set=eng

could be Anna Ho Na-Na:

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

Uff, sadly I never seen that one, though I love those old "Bashers". Anyhow the castpages helps to imagine the movie.
Thanks for sharing it with us and I support Your opinion about the 2 actors, but maybe we look for further evidence,
but it seems very likely. Where did You get the video?

I must check the trailer of BLACK GUIDE (my most wanted movie number 1) if the kid appears.

I did not see the kid in the trailer (I have only the trailer, is included at the DVD RETURN OF KUNG FU TRAILERS OF FURY)

Michael Kistner wrote:I did not see the kid in the trailer (I have only the trailer, is included at the DVD RETURN OF KUNG FU TRAILERS OF FURY)

Michael,
I agree. I watched the DVD too. I'm also looking forward to the full length version of BLACK GUIDE.I added some pics of his face.

https://hkmdb.com/db/movies/image_detail.mhtml?id=10858&image_id=400781&display_set=big5
Sure, we can only see the trailer, but at the beginning of the Super 8 footage I saw, the kid appears. He's a little young, but he's the same person!
Law Ma's BLACK GUIDE is next work of BLACK LIST, and the kid is a director's favorite.The Interval between shooting both is short,and the TIGER has a certain period of time.

Tagged 1 image as Anna Ho.

I am totally convinced, but I counterchecked the HKFA credits for Black Guide were he is listed as (童星) child star,
so You can't be wrong with that ID I assume. I cropped one of Your captures for a better portrait and added it

Great