Introduction: * Do you want to test your OCD? * when you find a pair of blue in a large red,you will be crazy? * when you find an upside-down brick in the neat floor, you will be crazy? * all kinds of information to remind you in mobile phone ,do you want to get all the information ? If you have any of the above a situation，this is the performance of obsessive-compulsive disorder! - don't worry!!! - Sort master is to disrupt the books neatly arranged This is absolutely the best artifact to cure patients with obsessive-compulsive disorder! Features： 1、arrange the books up in the limited time 2、click to adjust direction,drag to arrange the order 3、colorful books and a variety of sorting encoding Note： If the time is not enough, remember to click on our gift bag, there are surprises waiting for you !