Because I bought a mobile phone for my child this semester, my grades are declining, so I plan to enroll her in a remedial class. I want to improve his grades. I came to Dashan for education because my colleague introduced me and his children were also tutoring in it. I feel that the effect is ok and the cost performance is very high. Because there are many tutors, the courses are full, and there are all grades. I made up my child's English. After a while, I found that his grades also improved.