The cost of the imperial ballet test center is the lowest. 1-6 grade (lowest grade 6, highest grade 6) According to the ballet examination textbook of Beijing Dance Academy, the cost is 150 yuan/grade. Technical aspects: such as keeping the center of gravity correctly, keeping the correct abduction, whole body coordination, stretching legs on the ground and in the air, clear foot movements, landing control, grasping space, showing body lines, and comprehensive coordinated control of rotation.