A few years later, the French intervention in Indochina helped Cambodia to preserve its territorial integrity. Although both ethnic groups have fought for independence, the basic reasons such as land disputes and the condescending attitude of the Vietnamese towards the Mien still remain. FRIENDS PHOEBE BUFFAY OH MY EYES MY EYES POSTER. This condescending attitude was approved by the French. First of all, they thought that the wiser Vietnamese were more difficult, so they used the Vietnamese in low-level administrative positions to rule Cambodia. In 1934, in an open letter to comrades in Cambodia.