Some wonderful inventions make the world better, smarter and in some cases a little more fun. Here are some such inventions. 1 . Robots that can write articles The article was 300 words long and focused on the Spring Festival travel ru sh. Its author, took only a second to finish writing the article and is able to write both short stories and longer reports, according to Wan Xiaojun, a professor at Peking University who leads the team to study and develop such robots. “ When compared with the staff reporters, Xiaonan has a stronger data analysis capacity ( 数据分析能力 ) and is quicker at writing stories. But it does not mean robots will soon be able to completely replace reporters. ” he said. 2 . Sh oes that tie themselves Almost everyone who sees Back to the Future wants a pair of self - lacing _ shoes. _Now, thanks to Nike, the shoe dream is a reality. 3 . HandEnergy that charges your phone HandEnergy is a clever apple - sized device( 设备 ) that charges your phone anytime, anywhere. But what really makes this thing special is the fact that it uses your own personal energy to do it. A device that lets you charge your phone on the go doesn't sound very special, but HandEnergy just needs a hand. To get this little guy to produce energy, which it then stores in built - in batteries, all you have to do is hold it in your hand and rotate ( 旋转 ) your wrist. (248 words)