Recently, a series of bracelets have gone viral on Weibo. On these specially made bracelets are the words “Cell Phone Ninja.”
近日，一些手环在微博上走红。这些特定的手环上写着“手机忍者”。
The bracelets are actually part of an experiment carried out by Chongqing Three Gorges University that challenges students not to use cell phones in class for 21 days.
这些手环是重庆三峡大学(微博)进行的一项实验，让学生挑战21天在课堂上不用手机。
The experiment started on April 12. Each student who volunteered to participate received a bracelet. Before the first class and after the last class of each day, students were instructed to upload a photo of their bracelet to the school’s public Wechat account if they did not use their cell phones.
这项实验开始于4月12日。每位愿意参与此实验的学生将会收到一个手环。每天在第一节课开始前和在最后一节课结束后，如果没有使用手机，学生都就上传一个自己配备手环的图片到学校的公共微信账号。
Over 800 students signed up for the experiment, and 400 were selected to participate. After seven days, only 103 students remained. The experiment was set for 21 days because of a claim in psychology that 21 days is the length of time required to form any habit.
八百多名学生报名学生中，400名学生被选中参与。一周之后，只有103名学生坚持下来。这项实验指定时间是21天的周期，因为在心理学上有21天是培养一个习惯的时间长度的说法。
According to the teachers monitoring the activity, there were no rewards or punishments in the experiment. It depended on students themselves to make the decision. Teachers hope students can form better study habits through activities like this one.
据组织这个活动的老师说，这个实验过程不会有任何的奖赏和惩罚。完全由学生自己做决定。老师希望学生通过这样的活动能够养成良好的学习习惯。
