Laotongguan Roujiamo is the most distinctive. The steamed buns are dry, crispy, crispy and fragrant, and the meat is fat but not greasy. In addition, the biggest feature is that you must eat Laotongguan Roujiamo with duck slices soup. Laotongguan Roujiamo was originally called Shaobing Jiamo. Legend has it that Li Shimin once had it and praised it, "Wonderful, wonderful, wonderful. I didn't know that such a delicacy existed in the world."