 On the other hand, they were allowed somewhat greater freedoms, such as the right to own a radio that was not sealed to only allow being tuned to North Korean stations (as long they did not listen to foreign stations in the presence of North Koreans).More importantly, since around 1980 they were allowed to travel abroad, and participate in the important and profitable export-import business.After the PRC government came out in support of United Nations Security Council Resolution 1874 in June 2009, which imposed sanctions in North Korea, it was reported that North Korean surveillance and repression of Chinese residents had increased, and many had chosen to avoid making trips out of the country to avoid scrutiny.