I find what I want. Thank you!
Another question: What tool can repack the data00004 into a pac?

Thank you! I'll look into this file.

I know how to unpack pacs. I have already unpack all pacs, but I still don't find skill and persona data such as skill hit & damage, persona skill table. That's why I want to see what's in the data.cpk.

P4G PC version has a data.cpk file. I tried to unpack it, but every cpk unpack tool didn't work.
I think it maybe an encrypted cpk file. How to unpack it? Thank you!