Nezha expansion box is a versatile expansion board for micro:bit. Nezha board is loaded with 4 servo drives, 4 motor drives, and 7 sensor expansion interfaces that are in RJ11 connectors with foolproof and anti-reversal plugging design. Nezha board is convenient for students to connect quickly and accurately in classes; the shell is also designed with and Fischertechnik compatible interfaces, which has combined electronic modules with mainstream structural parts, and students can build personalized micro:bit creative programming projects themselves.