As a major Chinese city, Nanjing is home to many professional sports teams. Jiangsu Sainty, the football club currently staying in Chinese Super League, is a long-term tenant of Nanjing Olympic Sports Center. Jiangsu Nangang Basketball Club is a competitive team which has long been one of the major clubs fighting for the title in China top level league, <answer>CBA</answer>. Jiangsu Volleyball men and women teams are also traditionally considered as at top level in China volleyball league.
What is the name of China's highest level basketball league?
CBA