When cooking, first confirm that the pressure valve is closed, then open the lid and put the food to be cooked into the pot. Close the lid, tighten the pressure valve, and rotate the regulating valve to make the pot under high pressure. Do not open the exhaust valve at this time. When the pointer of the pressure valve points to the green area, it means that the pot has reached a certain high pressure state and can start cooking. After cooking, when it is necessary to exhaust, first open the exhaust valve, then rotate the regulating valve to make the pot in a medium or low pressure state, and finally close the pressure valve.