Qingcheng Houshan is a famous tourist attraction, located in Dujiangyan City, Sichuan Province, China. Behind Qingcheng Mountain, you can taste all kinds of delicious food, including local specialty snacks and traditional Sichuan cuisine. Here is some information that may be useful:

1. There are many restaurants and food stalls in the back of Qingcheng Mountain, which provide all kinds of delicious food, including fried chicken, grilled fish, barbecue, fried rice, noodles, tofu, zongzi and so on.

2. In Qingcheng Houshan Scenic Area, there are many restaurants serving traditional Sichuan cuisine, such as hot pot, chuanchuanxiang, boiled pork slices, Dandan Noodles, Maoxuewang and so on.

3. The farmhouse in the back of Qingcheng Mountain is also a good choice. You can taste fresh vegetables and local specialties, such as fried meat with green peppers, white meat with garlic paste and shredded potatoes with hot and sour sauce.

If you like snacks, you can try some local special snacks, such as candied fruit, twist, tofu, bean jelly and so on.

In a word, the food in the back of Qingcheng Mountain is rich and colorful. You can choose your own food according to your own tastes and preferences.