Table 2 shown below presents the keywords that are generated from the three corpora. It can be seen that the three corpora are highly similar with regard to their top-ranked keywords. In total, 14 keywords are found to be shared by the three corpora, demonstrating the high homogeneity of the three corpora. This is expected given that the data included in the three corpora are all about the same topic. Keywords China, PLA, America, and Taiwan signal the major parties that are involved in the military development of China of all periods. It is not surprising to see that China, Beijing, and PLA (People’s Liberation Army) are ranked at the top of the three keyword lists because CMPR targets them directly. The presence of Taiwan and America, however, may carry some interesting information. Taiwan is the top-ranked keyword across the three corpora, indicating that it is recognized by CMPRs that Taiwan-related issues have been at the top of the agenda of the military development of China across the three periods. The keyword America may suggest that the military development of China is deeply involved with the United States of America though the latter is a country located far away in the West hemisphere. Modernization is another important keyword that appears in all the three lists, suggesting that military modernization remains an ongoing priority in China's military development and has yet to be fully achieved. The rest of the shared keywords are all notions that are closely related to military domains, such as weapons, (C4I, navigation) systems, (ballistic/cruise) missiles, military capabilities, (ground) based, forces, etc.