In the old city of Beijing, within a short distance, you can have a taste of authentic Turkish food, genuine Spanish seafood paella, or prime French cuisine. People come across food from around the globe, and their taste has assimilated with that of the whole world. However, there always exists food that has not been discovered, hiding in the hills and valleys, rivers and seas, deserts and grasslands in China. These are the realms of secrets that we want to explore.