Cooling Wisdom  1. Fan×Frozen Plastic Bottle Try using a fan and a frozen plastic bottle! It can be as cool as an air conditioner! First, put the PET bottles in the freezer and freeze them. Put a piece of cardboard on the floor to prevent the floor from getting wet with water drops. Place it behind a fan and turn on the fan to get a cool breeze! Advantage: You can use the plastic bottle as many times as you want to cool it down! Disadvantage: It takes time to freeze. 2. Fan×Wet Towel A fan and a wet towel can be as cool as an air conditioner. First, wet a towel with water, squeeze it tightly, and hang it behind the fan. Then, turn on the fan and a cool breeze will flow! Advantage: It's easy to prepare! Wet towels can be used over and over again! Disadvantage: You need to freeze as many PET bottles as possible at one time!    3. Spraying Water Roofs, walls, balconies, and the ground will be exposed to sunlight and heat. So, by spraying water on those areas the entire building can be cooled from the outside! *Point* It is also recommended to do it to the outdoor units of air conditioners! Doing it around evening is very effective! *Note* Do not disturb the surroundings! Advantage: It cools everything down quickly. Disadvantage: It may not be possible in public facilities, such as apartments! 4. Green Curtains sometimes,you want to hang curtains but can't. In these cases, use a green curtain! You can use vines, such as from bitter gourds, cucumbers, morning glories, etc., that grow downward. When the vines grow to the point that they cover the window, the "green curtain" is complete. A green curtain will block the sunlight with the vines and keep you cool! *Note* Bitter melons attract bees, so be careful! Advantage: In addition to blocking sunlight, you can also grow vegetables. Disadvantage: If the green curtain grows too large, it will be difficult to clean up.   5. Mint Scent  As soon as you smell something with a minty scent, like mint spray, you'll feel the cool sensation! The coolness of the minty scent can lower your body temperature by as much as 4 degrees Celsius! Advantage: No air conditioner or fan is needed, so there's no power consumption! 　　　　　Advantage: You can be cool anywhere with the spray! Disadvantage: It is useless if you don't have anything with a mint scent! 　　　　　　Use with care because not everyone likes mint!  Now we can say goodbye to hot summers!. *Please take it easy and save electricity...