How to adjust the cooking time of electric pressure cooker

"There is something wrong with the time of my home appliance pressure cooker. When the rice is cooked, it will not jump automatically." How long have you bought your electric pressure cooker? As far as I know, it looks like an electric pressure cooker, so I have no time to adjust this knob. Only one knob (marked on it) is used for cooking, porridge, ribs, and bean gluten. When in use, just aim the knob mark at the scale mark on the pressure cooker. If it is cold to a certain temperature, it will automatically protect it. So unplug the power cord after insulation for 5 to 10 minutes after tripping, otherwise the rice will become hard. Note: When the power supply is turned on, there will be an indicator light when the insulation state starts. If you don't know how long it has been kept warm, you can quickly push the safety counterweight valve to see if there is "squeaky" steam rushing out. If so, wait a minute. If there is no sound, you can eat.