The present invention relates to a new type of functionalized nanoparticles for drug delivery, comprising a type of polymer nanoparticles, a polymer stabilizer coating, and a drug, wherein said polymer stabilizer coating is coated on the surface of said type of polymer nanoparticles, and said drug is conjugated to said polymer stabilizer coating. A control unit is rotatably mounted in the receiving space, and includes a first end formed with a press portion and a second end formed with a hook. The container also has a local communication interface for communicating with the external device using the short-range communication capability of the external device, and a processor for producing information and directing the local communication interface to send the information to the external device. A device asks its parent PNC to become a child PNC when a newly turned on device acts as a temporary PNC and broadcasts an initiation beacon indicating that it looks for a child PNC. A controller releases the clutch, controls the motor to generate the electricity through the torque transmitted from the wheel to the motor, and controls the HSG to consume the electricity generated from the motor, if a braking demand condition is satisfied.