Fang Shimin, a muckraking writer who has become a well-known advocate for academic integrity, said the problem started with the state-run university system, where politically appointed bureaucrats have little expertise in the fields they oversee. Because competition for grants, housing perks and career advancement is so intense, officials base their decisions on the number of papers published.

“Even fake papers count because nobody actually reads them,” said Mr. Fang, who is more widely known by his pen name, Fang Zhouzi, and whose Web site, New Threads, has exposed more than 900 instances of fakery, some involving university presidents and nationally lionized researchers.

His reason, he said, was vengeance for the revelations he blames for blocking his appointment to the prestigious Chinese Academy of Social Sciences.