Step 2: With the mother and index fingers of one hand to grip the rotating handle of the flying saucer, the lower end of the flying saucer is gently pressed in the approximate center position of the transparent plate, maintain the verticality of the flying saucer and chassis, and rotate the flying saucer handle with force, so that the flying saucer in the center of the transparent plate stable and fast rotation. (Rotation at the beginning due to magnetic interference has a certain degree of difficulty, should be patient and repeated practice in order to master ---!)
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