You must know these common sense of life.

1. Black spots will appear when the white vest is worn for a long time. Take 2 slices of fresh ginger and add 1 kg of water to boil. After it is slightly cool, pour it into the washtub, soak the white vest for ten minutes, and then rub it several times repeatedly to eliminate the black spots.

2. Cleverly remove the wrinkles on the tie. A wrinkled tie is smooth and beautiful without ironing. As long as you roll the tie around the beer bottle and use it the next day, the original wrinkles will be eliminated.

3. When you are very thirsty and there is no cold boiled water at home, you can soak the cup with hot water in cold water, and then sprinkle a handful of salt in the cold water, which will speed up the cooling of boiled water;

4. Don't hide under boulders, cliffs and caves when you encounter a thunderstorm during your trip. When the current passes through these places, it will produce an arc, which will hurt people who take shelter from the rain. If the cave is deep, you can hide in it;

Eating mutton helps to keep healthy. Mutton is an ideal source of carnitine, which is similar to amino acids and can help cells "burn" off excess fat in the body.

6. Tips for drying clothes: It is best not to expose clothes to the sun. It should be dried in a cool and ventilated place until it is semi-dry, and then dried in weak sunlight to protect the color and service life of clothes;

7. The key to drying clothes is not to dry them too much. To dry with clear water, flatten the lapels, collars and sleeves of clothes by hand, so that the dried clothes will remain flat and wrinkle-free;

8. Two ways to prevent clothes from fading: add proper amount of vinegar when washing dark cotton fabric to prevent fading and keep the luster as new; Put the newly bought colored cloth in water for the first time and soak it in salt for ten minutes to prevent the cloth from fading;