Question: 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?
Sentence (from "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.
Relevant evidence: Yes