According to the regulations of the Press and Publication Administration on the Chinese standard book number "No.1 is multi-purpose", each book in different forms should use an ISBN number. In the following cases, the ISBN should be used separately:

1, different binding forms of the same book (hardcover, paperback, etc. );

2. Different editions of the same book (revised edition, annual edition);

3. Different folio books with the same content;

4. Books with the same content and different text categories.

So the answer to your question should be to generate a new code.