At the same time the northern provinces of Nghệ An, Thanh Hóa and Hà Tĩnh were transferred to Tonkin, where they would come under direct French oversight.
Pada saat yang sama provinsi utara Nghệ An, Thanh Hóa dan Ha Tinh dipindahkan ke Tonkin, di mana mereka akan berada di bawah pengawasan langsung Prancis.