In high school, the teacher would repeat the key elements of each lesson over and over again. But once in college, a teacher will only act as a guide, and students must study, explore and practice on their own. On the job, self-learning ability becomes more important. Microsoft once made a statistic: in the knowledge content of every Microsoft employee, only about 10% is the knowledge that the employee has accumulated in the past study and work, and the rest of the knowledge is relearned after joining Microsoft. This data fully shows that a lack of self-learning ability is difficult to foothold in a modern enterprise such as Microsoft.