[Yeyu]

I also find this problem in .azw3 files converted by myself.
It's interesting, that Japanese or Chinese words are not separated by space. I always get a sentence when I try to select a word. But some Chinese books from Amazon don't have this problem. I can select a character even though it's an Azw3 file.
I will be greatly appreciated if anyone tell me how to make Azw3 files that only select one character when long taping on screen.