Fortunately, much as with US military, while there is a huge amount of activity going on in the classified realm, it is harder to keep secrets in the 21st century. There are literally thousands of Internet sites, in China and aboard, that painstakingly collect Chinese military technology related official and unofficial photographs, reports, documentation and other media from first and second hand sources. The overwhelming majority of such documents and discussions are, of course, in Chinese, which is why they often go unnoticed or misunderstood in the West. There are challenges to be sure. Inside China, these reports and online enthusiasts are monitored by official censors, who sometimes embargo or modify the most sensitive of media. Yet much open source information makes its way through, and indeed, often with a purpose. The Chinese government has its own goals in allowing media reporting and online discussion on new military developments to be proud of, while, in turn Chinese scientists as a professional requirement habitually publish basic research in fields like hypersonic engines and missile guidance. The bottom line is that, just like intelligence collection at official spy agencies, a huge part of understanding the latest and greatest Chinese military technology lies in the public domain. One simply has to collect it and make sense of it. And that is what we hope to do in Eastern Arsenal.