HowNet HowNet has an "Academic Misconduct Document Detection System", which is the entrance to duplicate checking of papers. Provide duplicate checking service for the first draft and final draft papers, and encrypt the duplicate checking process. It is a platform for blind examination of doctoral thesis. HowNet provides CNKI source database, foreign language database, industrial database, agricultural database, medical and health database, economic database and education database, among which comprehensive databases include China periodical full-text database, China doctoral thesis database, China excellent master's thesis full-text database, China important newspapers full-text database and China important conference full-text database.