how to fill statutory declaration of common-law union (IMM5409e) form?

[cur_zii]

I am confused about how to fill IMM5409e form especially the first section. In the first section should it be like this we A and B of cityA and cityB country of countryA and countryB in cityC in the country of countryC?

countryA and countryB are our nationalities.

countryC where we are living at the moment.

Additional question, does anyone know where I can find a person or agency to complete the section of administered the declaration in Shanghai, China?

Thanks