| 1. | Red books by a key , yellow books by the s key , blue book on the d button , according to a top - down order , and the press on january 1 corresponding to the color of the button , right , books will be an automatic add a corresponding book shelves
红色书籍按“ a ”键，黄色书籍按“ s ”键，蓝色书籍按“ d ”键，按照有上至下的顺序，一一按下与颜色相对应的按键，正确的话，书籍会一本一本自动放入到相应的书架中。 |
