Factiva - coverage includes thousands of newspapers and periodicals worldwide. User instruction available here.
Lexis Nexis Academic - Provides full text access to a wide range of U.S. and international newspapers, radio and television transcripts.
Where to Find Articles
Databases that have resources on China are available in both English and Mandarin. Depending on the topic you're searching, you can often start with Bibliography of Asian Studies and combine with a relevant subject database.