Jump three squares with one foot, then land two squares with both feet, jump one square with one foot, land two squares with both feet, and finally jump into a semicircle, just like jumping into the blue sky. Sangetian is an enterprise that focuses on developing and popularizing children's enlightenment teaching AIDS. Sangetian Globe Factory and Sangetian Science and Education Instrument Factory were established in 2008, which were jointly founded by Sangetian traditional private school early childhood toys.