As one of the best question-and-answer site, Quora is awesome, since you can also share your questions on Facebook and Twitter.
As mentioned before, ePub Bud is only available for you to create ePub 2 format eBook, but iBookstore only accepts ePub 3 format for Chinese eBook, and I have no idea how to convert ePub 2 to ePub 3.
So, I raised the question on Quora, while there was no answer yet, I also shared the question on Twitter and Facebook.
In order to get more attention, I added the Chinese translation after the original English question, as what you can see from the following image:
And the sharing message was fine on Twitter, as what you can see from the following image:
But something was wrong when sharing on Facebook:
As what you can see from the above image, the English message before the first "?" character was missing.
So, be careful and double-check when sharing your Quora questions on Facebook from the Quora site. And please leave a comment on the question about how to convert ePub 2 to ePub 3 if you know the answer, thank you.