How to install VirtualBox on Deepin Linux 2013

This tutorial is going to show you how to install the latest version of VirtualBox on Linux Deepin 2013. VirtualBox is a virtualization application which lets us to run multiple operating system on a single host. Oracle VirtualBox is available for Ubuntu based Linux such as Deepin Linux via apt. So we can easily update to the latest version in the future. 
To install Oracle VirtualBox on Deepin Linux 2013, please follow these steps:
A. Add Oracle Virtualbox repository to Deepin Linux 2013.
Open Terminal and edit the sources.list file. 
sudo nano /etc/apt/sources.list

Add the following line to the bottom of the file:
deb http://download.virtualbox.org/virtualbox/debian raring contrib
Now add the gpg key
wget -q http://download.virtualbox.org/virtualbox/debian/oracle_vbox.asc -O- | sudo apt-key add -
B. Update System
sudo apt-get update
C. Install VirtualBox
sudo apt-get install virtualbox-4.3
Now you can start using Virtualbox to install another operating systems on top of Deepin Linux 2013.