Useful. Xunwei Tianxia Catering Culture Research Institute is a unit funded by investment institutions and approved by the Industrial and Commercial Bureau. Committed to the construction of food ecological culture, relying on movies, television, media, the Internet and other channels to spread Chinese food culture and create a healthy food ecology. Chongqing food recommendation card is useful. It tells the food ecology of China with specific contents, and creates a series of food brands serving the public.