Tomatoes and Onions

When I was young, I had a pressure cooker at home that I used for more than ten years. Later, my mother bought a multi-functional pressure cooker and abandoned the pressure cooker that had been used at home for many years. Slowly, this multifunctional pressure cooker began to have a series of problems. The mother thought of the pressure cooker that had been lying aside for many years, but half a year after she discarded it, the children of the family had already sold it. Later, the pressure cooker bought at home also developed a lot of problems after being used for two or three years, so that my mother always regretted it when she thought about it.