Cortana is the virtual assistant for Microsoft, was launched for Windows Phone 8.1 until April 16, 2014, at the Windows Phone Shop, from the Joe Belfiore, Bill Gates and Steve Ballmer, was the business and enterprise in Cortana assistant, Cortana can talk to the voice for the people, can respond to "Hey Cortana" for Windows Phone 8.1, they have talk screen look like for Windows 10, in the Chinese, her name is "Xiao Na", is the Cortana names for the Chinese write this names, also the good virtual assistant can ask by the voice, Cortana can make your people find anything for the app, finding your home, and open app, was the good job app Cortana.