Look closely on the screen grab below and you will see several signs with these two characters included in the shop name.
Look at the screenshot below from Streetview and you can see this is one of the only remaining signs - the blue rectangle centre right. There are a few remaining white signboards but in general these have pretty much all gone - the Govt had a much publicised crackdown on them a couple of years back but I have no idea when Canton Road was 'tidied up'. Anyway, it looks like the circular cornered building in the left of the screen shot above (with the bat-holding-coin-shaped pawnbrokers signboard) may have been removed to make way for a 'sitting out area' (HK's ubiquitous drab concreted 'gardens' with seats for oldies to sit on) and a municipal toilet/refuse collection building.
Oh, I forgot to mention this is the section of Canton Road sitting between Nelson Street and Shantung Street in Mongkok.