Drinking tea is a normal thing in our daily life. Many people take drinking tea as their hobby, especially the elderly, because tea is rich in trace elements, tea polyphenols and other substances. Proper tea drinking can refresh, lose weight, resist oxidation, delay aging, enhance memory, excite nerves and prevent cardiovascular and cerebrovascular diseases. Drinking tea has so many benefits, but it will encounter many minor problems. Although these are small problems, they are difficult. What if you make a cup of tea and find that the lid won't open? I believe many people have encountered this small problem. If you don't have a meeting when you are in a hurry, you won't want to smash all the cups. I'll introduce you to a few simple methods, which can be solved in just a few small steps, to ensure that it works, and to solve it in one move.

What if the lid of the teacup can't be unscrewed?

Method 1: Turn the teacup upside down and pat the bottle cap hard with your hand, or pat the ground hard. Then try again and you can open it.

Method 2: Soak the teacup with hot water. The tea in the teacup rises in temperature, expands with heat and contracts with cold, and expands in volume, so it is easy to open.

Method 3: Freeze the teacup in the refrigerator, pour hot water when opening it, and you can easily open it.

Method 4: pry it between the cup mouth and the cup cover with a hard metal sheet and open it with a little air.

Method 5: unscrew it by force. When the force used is large enough and the friction between the force and the cup cover is greater than the pressure caused by the temperature difference, the cup cover will be unscrewed.

Method 6: Place the teacup, and then when the water is cold, the teacup can be easily unscrewed.

Why can't the teacup open? This is because the hot water in the teacup makes the air expand. When the water temperature drops, there will be a pressure difference inside and outside the cup, so it is difficult to unscrew the lid. There are six methods above, and I believe everyone can solve this problem with any one.