the report points out that a growing volume of research publications does not necessarily mean in increase in quality
No kidding. China (and Asia South-Pacific in general) has a rampant plagiarism problem. E.g.,:
This practice has permeated many of the country's scientific journals, where it is commonplace to copy-and-paste large sections of others' work. International journals are typically able to shield this using "similarity detectors" and peer review, but the occasional hack-job still gets through occasionally.