Legal analysis: Extradition refers to a country handing over a person accused of a crime or sentenced by another country to the requesting country for trial or punishment at the request of the relevant country. Extradition system is an important system of international judicial assistance, and it is also an important guarantee for the country to effectively exercise its jurisdiction and punish crimes. In international law, countries have no obligation to extradite, and the legal basis for extradition should be international treaties, international conventions and relevant domestic legislation with extradition provisions.

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.