Method 2: Put the bottle on the bottom of the can with the palm of your hand empty, then pat the bottom of the can for about 5~8 times, and then cover the lid with a rough rag. The rag can increase friction and can be opened with a slight twist.
Method 3: Prepare a pair of scissors or a kitchen knife to aim at the bottom of the glass bottle cap and gently pry it up. It is difficult to open the glass bottle jar because the air pressure inside the jar is much lower than that outside the jar. Using scissors to pry can let air in, so that the air pressure inside the tank is not much different from that outside, and it can be opened with a slight twist.
Method 4: prepare a pot of hot water, and then soak the cans upside down in water for 2~3 minutes. Based on the principle of thermal expansion and cold contraction, the tank cover can bulge. After the time is up, clean the cans with a dry rag and twist them, and you can easily open them.
Method 5: The reason why we can't unscrew the can lid is that the friction is not enough. We have rubber gloves at home, just put them on your hands and screw on the lid of the can, so it is very easy to open the lid, and the rubber gloves have strong friction.