Always follow the user manual for proper usage:https://cdn.yamibuy.net/statics/libraries/yamibuy/item_pdf/CJ-A9U_12-31.pdf
使用方法
When cooking with ingredients like bones or shells, make sure to remove them in advance. If simmering for an extended period, allow at least a 20-minute break between dishes to let the motor cool down. Do not heat when empty; add ingredients before heating. If the lid isn't fitting snugly, it's likely because the glass lid's alignment hole isn't lined up with the positioning peg.