It's opening day for Dumpling House, taking over the former tea room of the Greater Boston Buddhist Cultural Space on Massachusetts Avenue between Central and Harvard Square. As the name suggests, it's related to Gourmet Dumpling House, a popular Chinatown spot for soup dumplings. According to a Facebook post from the new restaurant, today is a "trial" opening, and they'll only be accepting cash for now. Hours are 11 a.m. to 10 p.m. daily. Here's a look at the menu.