It was March in an instant, and the hot summer began to count down. Many people cannot live without air conditioning in summer. But compared to air conditioners, electric fans are also unique an...

Nowadays, all of us are in an era of being surrounded by screens. We have a TV screen at home and a computer screen in the office. And also, there is a mobile phone screen in our pocket at any time. We spend a lot of time on all kinds of screens every day. The ubiquitous screens are affecting all aspects of our lives.