When citing priority, can the content written in the specification be cited?

Yes. Citing priority means that in an international patent application for the same invention, the filing date of a previously applied domestic patent can be cited as the filing date. According to the provisions of the Patent Cooperation Treaty, an international patent application can cite a previously applied domestic patent application for the same invention, but it is necessary to provide the relevant application number and domestic filing date in the international application, and declare the reference in the international application document. Domestic application.