In order to move Azure VM images from one Azure Location such as East US to East Asia, you need to use CMD line tool called Azure Cross-Platform Command-Line Interface. After installation of this tool and start up in our command line under administrative privelages, you can simply issue the following comand line. 

azure vm disk upload “http://source.blob.core.windows.net/vhds/example.vhd” “http://destination.blob.core.windows.net/vhds/example.vhd” “Destination Storage Key”

Important: Please make sure you source VHDs are set to be "public" so that command line tool can get to it and get the Destination Storage Key on "Managed Key" option on Destination Portal storage.

Note that you will be charged for data transfer between blobs.