Avoid always looking at the lid and let the hot air dissipate. Don't worry about the boiling water in the pot and keep adding water. You really want to add it. In addition, add boiled water instead of cold water directly. If you think the fire is too big, you'd rather change it to medium fire than keep adding water. When cooking soup, don't forget to do something else. Don't add salt to the soup. Add the salt flavor when you drink the soup. We usually don't add water in the middle of the soup. After the soup is finished, the original pot of water becomes half a pot of milky thick soup. Turn off the fire at this time and clean up the oil slick on the noodle soup first.