First of all, Siri and Bixby, two intelligent assistants installed in the smartphones, and Cortana is a third-party application, permissions support may be embarrassing. Windows Phone users may know that Cortana in Windows Phone was better than the Cortana app, Windows Phone Cortana was a lot easier to use. Microsoft Cortana (Xiao Na) is a cross-platform smart assistant, available across all devices including PCs and smartphone, trying to do more like WeChat Noda. For the smart assistant, permissions is a good thing, looking forward to the perfect performance of the Surface Phone. Of course, as a smart assistant, the pace of development is still relatively slow, but Cortana team will be working hard to make the assistant better. Last year in 3rd-anniversary celebration, Cortana saw all new features and support, three years is not a long time, but the move on this road Hana never forget, Microsoft Cortana team must live up to expectations.