The ingredients used in many traditional dishes are included in the protection list. Northeast cuisine is called "Prison Guide", not because of its taste or cooking technology, but because of many ingredients used in traditional dishes, such as bear's paw, flying dragon, wood frog, venison, wild boar and so on. , has been included in the "national rare animal protection law" protection list. According to this law, illegal hunting and selling of these rare animals will be severely punished by law. Therefore, these ingredients, which were once common in Northeast cuisine, have now become "prison guides". This also reflects the determination and action to protect the ecological environment from the side.