How is Windows 10 compatible with Android?

The work of Windows 10 Mobile compatible with Android is called "Project Astoria" inside Microsoft. In the preview version of Build 10149, the media also found that it contains a complete Android subsystem. For consumers, our question is, how do Android apps need to run on Win10 phones?
Reports from WMPU say they sniffed some clues from Microsoft's recent recruitment brief. The job descriptions are as follows:
Our Astoria team is providing a new experience for consumers and developers, and it may also bring a huge change to the Windows platform. Astoria bridge allows Android developers to run unmodified binary code directly on the Windows mobile platform.
Before, the general opinion is that Microsoft will convert the APK into a Windows APX application in some way, but now it seems that the APK can be run directly in Win10.
In this regard, some developers have speculated that in fact, just wrap the APK application in the appropriate manifest file and convert it into an APX application that can run on Windows 10 Mobile.