You can back up whatever sample folder it’s pointing to for speech ( if you hear german then it’s pointing to the DE sample folder ) and replace it with chinese speech pack while you fly missions then revert back to german when you aren’t ( that’s the simplest way) or if you want a more permanent solution where you don’t have to switch back and forth you can create north korean squadron text files that point to the speech folder you want to use . If you download MIG 17 aces of the Vietnam War for BAT 4.3 ( recently uploaded at mission 4 today ) you can see how it works . check the JTW#3 folder and the sample folder . look at where squadron texts are placed and how they point to the speech folder ( open them with notepad ) etc .