Greetings. I have not seen ricksaws with these large wheels. It must be before my time in Hong Kong, 1940s even earlier? or the photo taken in some other place?* If that boat at centre was tied to shore, the bend of the road suggests this could be at/near Pedder Street, as in here - https://gwulo.com/atom/20989/zoom
Source: uwants.com - post #3321 by user 4rex - http://www.uwants.com/viewthread.php?tid=14833421&page=222#pid226752249
* March 10, 2018: For information on photographer, location and date of photo, please see discussions below.