How to type the book in mermaid?

Free and unfettered love Mermaid has a certain chance of success by typing out the book and putting it in her stuffing room, and then taking it out.

1, it is sometimes possible to exchange pets with others.

2. After Tuesday's maintenance, I successfully wrote a good book for BB, unlike some people who say that luck+money+courage =JP baby's. Playing like this also has a chance of success, but it is quite a waste of money.