Can I open a hotel room alone at the age of 17?

yes. Article 18 of the Civil Code of the People's Republic of China * * * Adults are persons with full capacity for civil conduct and can independently carry out civil legal acts. Minors over the age of 16 who take their own labor income as their main source of livelihood are regarded as persons with full capacity for civil conduct. Therefore, teenagers who have reached the age of 17 can show their valid certificates and register their real names to stay in hotels.