Under the system of the time, military governors such as Duyệt moved to different posts with individual units that they had commanded for years, so he could count on their fidelity.
Berdasarkan sistem pada masa tersebut, para gubernur militer seperti Duyệt dipindah ke posisi yang berbeda-beda bersama dengan masing-masing unit yang mereka perintah selama bertahun-tahun, sehingga ia dapat mengandalkan kesetiaan mereka.