I know that, in some poor region of USA, people supplement their income by growing pots. If guns become scarce due to strict gun laws, they may switch to illegal-gun manufacturing.
I did not know that things are this gad in China. We all heard about lagging development in hinterland of China. Now, they are resorting to old-fashioned way to make money. Producing illegal products which are strictly banned under the law, with the nudge and the wink of local officials.
I think this story is very human, with a lot of complexity involved.
However, if I posted this on lundian.com I would immediately be attacked by Chinese posters who would feel it necessary to point out drug violence in American inner cities and claim that the author of this article was a liar.