Can I stay in a hotel without an ID card but with a Nanjing citizen card?

If there is a photo on the citizen card and an ID number, you can stay in the hotel. In fact, this is also a kind of recognition.

According to the relevant laws and regulations of public security management in the hotel industry, passengers should register with valid identity documents when staying in the hotel. The identity documents of China citizens mainly include: household registration book, temporary id card, driver's license, passport, seaman's card, Hong Kong and Macao pass, military officer's card, police officer's card, civilian cadre's card, soldier's card and student's card.

Chinese mainland citizens who really need to go through the boarding formalities without valid identity documents shall declare and verify their identity at the local police station. The police station can print the information of the passenger in the national population information database, and affix the official seal to the passenger as the proof document for handling the flight formalities.