APKeaton

Thank you all for the information. Someone told me about online express passport service but it seemed still 4-5 days since I need to ship documents to them and receive.

If I can directly go to the passport agency directly, I'll try that way.

Will it cause a problem if I leave US under my country’s passport after naturalization? I'll apply a US passport immediately after the ceremony but may need to leave soon. I'm thinking to ask my friend to ship my passport to my country and come back with it. If I don't have a departure record under the US passport, will there be any issues?

I applied for citizenship and now I've got to go back to my county for a while. I don't know when I can get an interview but, assuming the interview will be scheduled within 6 months, will it be OK to stay abroad until the interview date?

Or if interview is not scheduled in 6 months, is it ok to come back to the US once and go back to stay abroad til the interview?

If I need to show some records for continuous residence,  what can be relevant evidence?