Pork belly bao buns are a popular Chinese street food that features tender slices of pork belly in a soft and fluffy steamed bun. The pork belly is first marinated in a mixture of soy sauce, hoisin sauce, and other seasonings, then roasted until crispy. The bao buns are then filled with the pork belly, fresh vegetables, and a variety of sauces. The result is a deliciously savory and satisfying snack or meal.