I'm Huang Shanren. I'd like to recommend some local restaurants to you. Generally, tourists will go to the old street. The grade of "the first floor of the old street" is good, but the consumption is relatively expensive, and the average person is over 60. Recommended specialties are: stinky mandarin fish, Huangshan double stone (stewed stone chicken with stone ears) and hairy tofu (this is a must-eat when you go to Huangshan ~). If you want to eat some snacks, the "Gourmet Family" next to the "Old Street First Floor" is good. We generally like to order: Huizhou fried rice, steamed chicken with powder and braised tofu, and the drinks there are also very special. Per capita consumption is about 40. In a word, snacks in Huangshan city are generally concentrated near the old street, and some local restaurants are also very authentic in taste and reasonable in price, because we locals will also eat them, such as "Fat Man" dishes. There is also a "snack street", which is not far away. Some barbecues, vermicelli pots and the like can be eaten after supper.
I hope it helps you! Welcome to Huangshan Mountain! O(∩_∩)O~