

It’s extremely common for citizens of the DPRK to visit, live, and/or work in the PRC. The two countries are on favorable terms. The DPRK has no “gulags,” the GULAG administration was a part of the early-mid soviet penal system, it isn’t a generic term for prisons in socialist countries.

You asked for proof, and now mock people for giving it to you. This is extremely online behavior.