Found this @ 3:55 looks kinda like the corner.
The block looks vacant like in Google streetview. Video from 2008.
https://youtu.be/fuoJwv5if3o
Walking tour of Portland St. 2014
https://youtu.be/bLlxPQue96k
Got to find a match WHEN the street looked the same.
there is a CCTV camera footage!
at that exact corner read caption of one of the pictures
https://www.hongkongfp.com/2017/08/15/cctv-footage-appears-show-attacked-democrat-howard-lam-alone-yau-ma-tei-around-time-incident/
"Footage captured by a shop camera on the corner of Portland Street and Hamilton Street shows him emerging from the shop at 5:41pm. Lam, who is wearing a black T-shirt, dark blue shorts, white-rimmed black trainers and a dark-coloured watch on his left hand and carrying a dark-coloured backpack, then turns right and walks along Portland Street towards Pitt Street. Both of his feet point inwards as he walks. (Note: the clip shows that it is 5:43pm but FactWire can confirm that the CCTV runs about two minutes faster than the actual time). Photo: Factwire."