How many universities are included with Zhejiang University in the official alliance which produces 20% of the nations academic publications and 30% of total citations in China?
Zhejiang University:  It is a member of the C9 League, the Yangtze Delta Universities Alliance and the Association of Pacific Rim Universities. C9 League: The C9 League is an official alliance of nine elite and prestigious universities in mainland China, initiated by the Chinese Central Government through Project 985 to promote the development and reputation of Chinese higher education system by founding world-class universities in the 21st century.
an official alliance of nine elite and prestigious universities