There is a one-on-one tutoring institution called Modern Confucius Institute in Chang 'an Town, Dongguan, and there are two branch schools in Chang 'an, which are relatively large in scale and the tutoring effect is acceptable. I have a friend named Cai. His child is in the sixth grade in the Central Primary School. Now he is tutoring Olympiad Mathematics in that campus of Chang 'an Middle School, and his grades are improving rapidly. I suggest you have time to get to know it. The telephone number over there is 853 1500 1. I hope it helps you.