The Central Tibetan Administration also says that millions of Chinese immigrants to the TAR are diluting the Tibetans both culturally and through intermarriage. Exile groups say that despite recent attempts to restore the appearance of original Tibetan culture to attract tourism, the traditional Tibetan way of life is now irrevocably changed. It is also reported that when Hu Yaobang, the general secretary of the Communist Party of China, visited Lhasa in 1980, he was unhappy when he found out the region was behind neighbouring provinces. Reforms were instituted, and since then the central government's policy in Tibet has granted most religious freedoms. But monks and nuns are still sometimes imprisoned, and many Tibetans (mostly monks and nuns) continue to flee Tibet yearly. At the same time, many Tibetans believe projects that the PRC implement to benefit Tibet, such as the China Western Development economic plan or the Qinghai-Tibet Railway, are politically motivated actions to consolidate central control over Tibet by facilitating militarization and Han Chinese migration while benefiting few Tibetans; they also believe the money funneled into cultural restoration projects as being aimed at attracting foreign tourists. They also say that there is still preferential treatment awarded to Han Chinese in the labor market as opposed to Tibetans.