East Asian bad guys trap rapping in their native languages: #1 Mongolia (Mongolian) [thread followed by other recommendations welcome]
East Asian bad guys trap rapping in their native languages: #2 Japan (Japanese)
East Asian bad guys trap rapping in their native languages: #3 People’s Republic of China (Chinese)
East Asian bad guys trap rapping in their native languages: #4 Vietnam
East Asian bad guys trap rapping in their native languages: #5 Hong Kong (Cantonese)
East Asian bad guys trap rapping in their native languages: #6 Taiwan (Chinese - Guoyu)
East Asian bad guys trap rapping in their native languages: #7 Republic of Korea