It is probably the apron of the pressure cooker, that is, one of its aprons is loose, causing its high-pressure soup to overflow. Even if the pressure cooker is pressurized, its carbon will overflow through the looseness of the rubber ring.

1. When we made it, it was under high pressure. Be sure to see where it overflows. If it's water overflowing from the side of the pressure cooker, it's that our rubber ring is loose. So just replace the rubber ring.

2. Long-term use of the pressure cooker leads to the blockage of the exhaust pipe, so it is necessary to clean the exhaust hole and pressure limiting valve frequently. Exhaust of safety valve is a safety measure to release the gas in the pot to avoid explosion. Under normal circumstances, the safety valve does not vent.