Peninsula - Gang Dong-won (2020) - Canton Road, Mongkok

The gang take Jung-seok to see their boss (Geoffrey Giuliano) and the establishing shot for this part is of Canton Road. The big red sign in the top image, as well as the "Harbour Hotel" (aka the Harbour Inn as it is now known on the interwebs) sign, are still around. This is the stretch of Canton Road between Shantung Street and Soy Street.
 

Peninsula - Gang Dong-won (2020) - Sai Yeung Choi Street South, Mongkok

I can't quite remember what the context of the next shot is but I'll leave it here anyway. I think it was just one of those incidental shots that joins two scenes together - in this case the change from the bosses apartment to the noodle shop where Jung-seok and his brother-in-law have a bit of a heart to heart. Anyway, it's Sai Yeung Choi Street South just north of Mongkok Road.

Peninsula - Gang Dong-won (2020) - Reclamation Street, Mongkok

This is the street location used to show where Jung-seok lives. It's shown as several gang members make their way to his apartment to take him to see their boss.

This is the section of Reclamation Street just north of Argyle Street in Mongkok. The shot starts looking up at some of the buildings on the west side of the street (we're looking south in this brief sequence) before panning down to street level. As a great example of how things often look very different on film, I often catch the bus home from the bus stop at the bottom of those buildings and am here quite often. However, I still had to search for where the "H1 Hotel" is (you can see it in the background) in order to find the location.

Peninsula - Gang Dong-won (2020) - Victoria Harbour

Next up is this 2020 Korean semi-sequel (i.e. same universe, different characters) to Train to Busan starring Gang Dong-won. Gang plays a former soldier whose family is affected by the zombie virus as they are making their escape from South Korea to Hong Kong via a refugee ship. Fast forward to now as he and his brother-in-law are living in squalor as refugees in Hong Kong and are given the chance to return to the Korean peninsula to retrieve a shipment of gold, abandoned in-situ as the zombies took hold.

The initial Hong Kong sequences are establishing shots only and I don't think any on-location filming of the actors took place, but feel free to let me know if this is not the case. First up is the initial establishing shot to show where the protagonists are currently located. It's a nice colourful shot of the harbour looking towards Hong Kong Island.