I’ve just activated my free Office Student & Home after much struggle. Here’s how it went:
At first I’ve tried activating office using Chinese windows though without any luck because it was telling me that my activation code is region locked. Today I’ve contacted Microsoft support and told them that I bought this laptop in China and it came with Windows and Office keys but I’m not able to activate Office because of the region lock. I asked them if they would be able to exchange this Chinese key with European and they did!
If you have any questions on how to do it reply to this post.
Also, if you want to contribute to creating a subreddit for xiaomi laptops, contact me through Reddit (Username: ocrynox). Currently it’s /r/minotebook . It’s unlisted or private, can’t remember.