North Korean state media has urged its young people against using slang from South Korea and told them to speak North Korea’s standard language, writes BBC.

There were also fresh warnings in North Korea’s official newspaper against adopting the fashions, hairstyles and music of South Korea.

It is part of a sweeping new law which seeks to stamp out any kind of foreign influence, with harsh penalties.

Those found in breach of the law can face jail or even execution.

Rodong Sinmun newspaper warned millennials of the dangers of following South Korean pop culture.

“The ideological and cultural penetration under the colourful coloured signboard of the bourgeoisie is even more dangerous than enemies who are taking guns”, - the article read.

It stressed that Korean based on the Pyongyang dialect is superior, and that young people should use it correctly.