Man, I thought I was having a stroke reading this. It would frankly be a lot more readable if they'd just used pinyin directly.

As an example, they use 下在 in place of 下载. These are pronounced differently (zài in the former, zǎi in the latter). The former also sort-of means "here is" or "below are" (although nobody would actually write it that way), which means you get something that looks kind of like "below are size: 188.17 MiB" instead of "download size".

I do appreciate the author pointing out that this is just an exercise, because I would never be able to use this in practice, and I'm not even a native speaker.