Israel Epstein wrote that prior to the Communist takeover, poverty in Tibet was so severe that in some of the worst cases peasants had to hand over children to the manor as household slaves or nangzan, because they were too poor to raise them.[78] On the other hand, Laird asserted that in the 1940s Tibetan peasants were well off and immune to famine, whereas starvation was common in China.[79] According to other sources, the so-called "slaves" were domestic servants (nangtsen) and managers of estates in reality.[80]
In 1904 the British army invaded and held the Tibetan Chumbi Valley, in the border region adjacent to Bhutan and India. Sir Charles Bell was put in charge of the district from September 1904 to November 1905[81] and wrote that slavery was still practiced in Chumbi but had declined greatly over the previous thirty years. He noted that only a dozen or two dozen slaves remained, unlike nearby Bhutan where slavery was more widespread. Bell further remarked, "The slavery in the Chumpi valley was of a very mild type. If a slave was not well treated, it was easy for him to escape into Sikkim and British India."[82]