What about Vietnamese passports in China?

Legal analysis: 1. Work flow of nationality identification, submit my relevant nationality certificate, submit my written explanation and corresponding certificate on nationality.

Second, the nationality acceptance and approval process, submit my written application and relevant documents and certificates, fill in the nationality application form, and submit four two-inch photos of myself. After accepting the application for nationality, the county and city public security bureaus make necessary investigation and verification on the applicant's situation, and then submit their opinions in writing to the provincial and autonomous regional public security bureaus, which will review the written report of the city and county public security bureaus. After verification, they put forward handling opinions, wrote a review request and reported it to the Ministry of Public Security for approval. When handing over the naturalization certificate and re-entry certificate, the accepting organ will confiscate the foreign passport and foreigner residence permit held by the applicant. At the same time of handing over the citizenship certificate, the identity cards of People's Republic of China (PRC) and China held by the applicant shall be confiscated, and the China passport shall be confiscated, and the household registration department shall be notified to cancel its China resident account.

Legal basis: Article 9 of the Law of People's Republic of China (PRC) on Exit and Entry Administration. China citizens shall apply for passports or other travel documents when leaving or entering the country.

China citizens who want to go to other countries or regions also need to obtain visas or other entry permits. However, unless the China government has signed visa exemption agreements with other governments or the Ministry of Public Security and the Ministry of Foreign Affairs provide otherwise.

China citizens who leave or enter the country as seafarers and work on foreign ships shall apply for a seaman's certificate according to law.