During his time in office, Hu tried to rehabilitate the people who were persecuted during the Cultural Revolution. Many Chinese people think that this was his most important achievement. He was also in favor of a pragmatic policy in the Tibet Autonomous Region after realising the mistakes of previous policies. He ordered the withdrawal of thousands of Han Chinese cadres from the Tibet Autonomous Region following a May 1980 visit to the region, believing that Tibetans and Uyghurs should be empowered to administer their own affairs. Han Chinese who remained were required to learn Tibetan and Uyghur. He set out six requirements to improve 'existing conditions', including the increase of state funds to the Tibet Autonomous Region, improvements in education, and efforts to revive Tibetan and Uyghur culture. At the same time, Hu stated that "anything that is not suited to Tibet's conditions should be rejected or modified". Hu made a point of explicitly apologizing to Tibetans for China's misrule of the region during this trip. He also declared to cancel Bingtuan (soldier farmers) in Xinjiang Uyghur Autonomous Region.