Abstract: A virtual machine creation method and apparatus are disclosed. The method includes: acquiring a first installation package of a first application; determining essential environmental data corresponding to the first installation package; obtaining a simplified operating system via compilation according to the essential environmental data; packaging the simplified operating system and the first installation package to obtain a virtual machine installation package; and running the virtual machine installation package to create a virtual machine.

Abstract: A method and an apparatus for controlling an aircraft are disclosed. The method includes: determining a horizontal velocity Vh and a vertical velocity Vv of the aircraft; acquiring, along a moving direction of the aircraft, an object having a distance that is no greater than a preset distance L away from the aircraft; predicting, according to the horizontal velocity Vh, the vertical velocity Vv, and the preset distance L, a position relationship between the aircraft and the object after the aircraft flies the preset distance L; and controlling the aircraft, by using a preset control measure, if the position relationship meets a preset relationship.

Abstract: A method for guiding the blind includes: determining a target direction; and controlling a mechanical device to shift its center of gravity toward the target direction according to the target direction; wherein the mechanical device comprises a balance weight, a connecting rod, and a rotating axis, the connecting rod is connected to the rotating axis, and the balance weight is located on the connecting rod.