I took my parents here for a vegan meal as we'd heard the chef does special vegan dishes. In fact, the chef/owner came out and took our order personally; I felt like were were in capable hands even though he refused to tell us what he actually planned on making for us. "Leave it to me. Trust me," he said.
We started off with a scallion pancake which was huge and delicious. I love scallion pancakes in general, and this one was practically a meal in itself, covered in a heavy, but tasty, tamarind-based sauce. The sauce especially impressed my picky Indian parents.
For the main course we got a curry tofu dish with a variety of vegetables. My parents were also impressed with this dish. I liked the flavor of the sauce, but the dish was so oily without reason that I couldn't quite fall in love it. Mapo tofu is oily by default, but this dish, on the other hand, was just a curry stir-fry and didn't call for it to be oozing oil.
They don't offer brown rice here, which was both disappointing and surprising.
House of Nanking does offer an unusual experience for vegans and vegetarians looking for a good, non-mockmeat meal in Chinatown. Combined with the friendly service and the "in-the-know" feel that it imparts upon you, House of Nanking is recommended.