I just returned from a week in Beijing and had the most amazing food and street snacks there. As a vegetarian, I was especially fond of the street pancake made with eggs - like an Indian Kathi roll - with a fried wonton in the center for crunch. What an amazing idea!!
Also my first exposure to food from Guanxi and Yunnan - run to Lost Heaven if you are ever in Beijing ( I believe they have an outpost in Shanghai as well). Also a terrific eating experience at the Black Sesame Kitchen - if you don't get resos ( they have one seating at 7, it's communal dining) you can console yourself with the street pancake round the corner.
So to the topic at hand, they applied 3 sauces - one was a chilli sauce that may have had mala in it, but couldn't recognize the other two applications. Any suggestions of what they may be?