Chinese nationality may refer to the nationality or the right to carry a passport of a number of areas:
China Nationality Law of the People's Republic of China, the law which defines who is or may become a PRC national.
Hong Kong HKSAR passport, issued to PRC nationals with permanent residence in Hong Kong
Macau Macau SAR passport, issued to PRC nationals with permanent residence in the Macau
Taiwan Nationality Law of Republic of China (Taiwan), the law which defines who is or may become a ROC (Taiwan) national. (Whether it's a part of Chinese nationality is under disputes, see political status of Taiwan and Taiwanization.)