If you're searching for really good fast Shanghainese food in Hong Kong, this place is the best. Although they have many locations, there's always a line up. Try to get there early to beat the lunch crowd. However, usually they are located in a Mall (IFC, WTC etc.) so, wait for a bit, then leave them your phone number so you can walk around and they can call you when a table is ready.
Locations include IFC mall, Central; World Trade Centre, Causeway; Harbour City, TST
We went there as a large group one day. 5 guys and 4 girls. When the food came, it litterally disappeared. We ordered more than 20 dishes, but the bill was only about $20CAD.
I don't have pics of this because honestly the food comes and goes so quickly that I barely had time. I'll update once I do.