I totally got it, but the PAF will be getting their own 24 J-15s. That is what @Khafee Sahib shared with us.China is not giving up its naval fighter fleet to Pakistan.....China is simply planning to relocate some of its naval fleet assest "beyond Chinese Water". Hope you got it.
Nobody can defend Pakistan the way Pakistani armed forces can and also would want to. Pakistan will never outsource it's defense to someone else. Because Pakistan needs to look after it's own priorities and interests.
Come to think of it,
1) What will be the mission of this relocated Chinese asset?
2) When will this relocation be taking place?
3) What will be fulfilling the current Chinese maritime/naval duties in place of these relocated assets?