Windows8.1 free version of Windows 8.1 with Bing in the end how?

Windows 8.1 with Bing is a free version of Windows 8.1, bundled with Microsoft software and services, and Windows 7 users can upgrade for free. This heavy news made people ecstatic and began to think about the all-free era of Windows.
The leaked documents have poured cold water on people: Windows 8.1 with Bing is built for cheap Windows 8.1 devices and is only available to OEMs.
WZOR, a well-known breaking website, just released the "Windows 8.1 Spring 2014 Update" ADK (Assessment and Deployment Kit), and a document found by the outbound station Bav0 let us have Windows 8.1 with Bing Comprehensive and in-depth understanding.

Windows 8.1 with Bing is no different from other versions of Windows 8.1 in other features of the system. But it is built for cheap devices. Microsoft Bing Search is the default search engine for the system's Internet Explorer. OEMs can't change this setting through third-party tools, which will drive consumers to use more Microsoft services such as OneDrive and Bing. However, users still have full autonomy to install other browsers and change the default search engine.
This reminds us of the previous report of a 70% reduction in the licensing fee for cheap Windows 8.1 devices. Bloomberg reported a few weeks ago that Microsoft is considering using price incentives to encourage OEMs to launch cheap Windows 8.1 devices. All cheap Windows 8.1 device license fees priced below $250 can be significantly reduced from the original $50 to $15. Two days later, Joe ·, vice president of Microsoft's Windows Phone Planning Management Department, wrote in an official blog:
Microsoft will motivate our partners to build at competitive prices. A cheap device with a high Windows user experience.
The Verge has mentioned in previous reports that Windows 8.1 with Bing may be offered to PC manufacturers as part of a cheaper Windows 8.1 device OEM license fee reduction program. This ADK document further shows that Windows 8.1 with Bing is specifically built for the low-cost Windows 8.1 device OEM license fee reduction program.
Windows 8.1 with Bing was first seen in Windows 8.1 Update 1 (also known as Windows 8.1 Spring 2014 Update) screenshots leaked, this latest system upgrade will be released at the Build conference in April