The learning machine developed by Noah Education Holdings Co., Ltd. is an educational auxiliary electronic product similar to a tablet computer. It is a "cloud learning" technology platform and application terminal, aiming at reducing students' learning burden. Its spokesman is Tang/Tang Gong [1]. The first product U5 was launched on 20 1 1 year. By February of 20 14, including U6, U7, U 12, U 18, U 18S, U20, U6S, U28 and U30.