This is my favourite place for dumplings. I no longer live in the area, but when I visit my parents this is where we go to get lunch.
My favourites are the sticky rice Shu Mai, the soup dumplings, shanghai style porn buns, and green onion roll with stewed need. I also really enjoy the braised beef noodle soup.
If you are in the area and are in the mood for dumplings, there is no other place to go.