日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

Only 103 of the 400 students taking part in a three-week-long campaign aimed at reducing mobile phone use in class at Sanxia College were able to stick it out for the full 21 days.

The campaign, which began on April 12, was designed to encourage good habits among freshmen and sophomores, but most dropped out less than a week later.