1, multi-function knife with can opener. If it's nothing, cut a circle on the canned fish with the low-end tip of the kitchen knife at home and open it.

2. Use the traditional can opener, which is specially used to open canned fish. Now there is a new can opener from China on the market, which can be easily opened.

Just use the small spoon that we usually eat. Hold the big head of the spoon against the bottle cap of the canned fish (glass bottle), and then press it vertically downward. When you hear the sound, you can turn it on easily.

4. Use a metal cutter to pry it open along the tinplate edge of the bottle cap, so that the air pressure balance inside and outside the can can be easily opened.