1. Wash lotus root and carrot, peel and cut into pieces, wash corn and cut into pieces, and clean other materials. Soak the mushrooms before cooking
2. Put all the ingredients in the pot, fill up with water, turn to a low heat and cook for 2 hours
3. After turning off the heat, add some salt to drink as soup. You can also remove the ingredients and store the soup in a fresh-keeping box. Take it out when necessary for cooking.