Recently, a stress-relieving artifact-Fidget Spinner (which is also named as Finger Spinner) - sweeps the world. It is a small toy with a symmetric bearing system that can spin on one’s finger, and it is said that this toy can be used to help treat ADHD, relieve anxiety, reduce stress, give up smoking, pass the time, etc.From the beginning of 2016, this little spinning top was being popular slowly in North America, and now it has been all the rage in the INS friends circle....