They open at 10am on Saturday and Sunday, and 11am during the week. This place occupies the former Hong Kong Royale space. They remodeled the whole restaurant, replaced all the furniture, china, etc. It's much better than Hong Kong Royale. I only had dim sum there, and I would say they have the best dim sum out of all the places in the DFW area.
The china that they use were imported from China, a manager there told me. Try all their dim sum dishes, they're delicious and fresh. I haven't tried their other dishes other than dim sum.