The website bogusbricks.com has nailed it. Lepin Bricks are dangerous! They are dangerous to Lego's entry into the Chinese marketplace. If I were Lego, I'd be worried too.
http://cphpost.dk/news/business/fierce-copyright-battle-mars-legos-push-in-china.html
Lepin bricks are also dangerous, because they must have baked in some addiction chemical into the bricks. After I buy one cheap set, I can't stop, and then I buy another, and another.
It's not just Lepin bricks that are dangerous, there are other bootleg brick brands you need to stay away from:
Bela
Enlighten
Lele
Kazi
Sluban
Wange
Hsanhe
Gudi
Decool
Sheng Yuan
So remember, don't be an idiot, pay a lot more for Lego bricks, because the Ole Kirk Kristiansen family that owns Lego aren't rich enough. They only have a few billion dollars of net worth.
https://www.bloomberg.com/news/articles/2013-03-13/lego-builds-new-billionaires-as-toymaker-topples-mattel.
