Analysis of information sources in references of the Wikipedia article "Haw wars" in English language version.
In the 1880s, the White Tai ruler of Muang Lay, Cam Oum, allied himself with Chinese bandits who were plundering and causing considerable chaos in the area. During the years 1884 to 1887 two Siamese military expeditions made an effort to put down these depredations and reassert Siamese suzerainty. The Siamese operated out of Muang Thanh (Dien Bien) and maintained close relations with the Black Tai there.
In the 1880s, the White Tai ruler of Muang Lay, Cam Oum, allied himself with Chinese bandits who were plundering and causing considerable chaos in the area. During the years 1884 to 1887 two Siamese military expeditions made an effort to put down these depredations and reassert Siamese suzerainty. The Siamese operated out of Muang Thanh (Dien Bien) and maintained close relations with the Black Tai there.