It's really difficult, but there are such things.
For example, the S.Koreans used "national friendship" to lure Chinese Koreans to steal cultural relics and transport them to S.Korea.
These stolen murals were publicly displayed in the Korean National Museum,and the Koreans are proudly making a movie to show off about it(Collectors/盗墓同盟/도굴).
This can be seen as the South Korean government allowing the theft and smuggling of cultural relics.
In the past, the crime of smuggling cultural relics was very rampant in China.It has been rumored that in the most chaotic 1980s, the government tried to turn "cultural relics export" into a means of exchanging foreign exchange
So they steal actual artifacts on top of traditional garbs and holidays? Yikes. I hope that future thefts will stop with steaks and watermelons.