[pcr0]

1) Large, mostly homogeneous nation. 2) Government bans foreign internet/social media services, protecting local companies from foreign competition.

[paradite]

1. Korea is much more homogeneous than China. China has a wide diversity of ethnicities. (Before you downvote, check Wikipedia first)

2. China doesn't "ban foreign internet/social media". LinkedIn is in China, so is Bing. It bans companies that do not follow Chinese law. If you want to argue that the Chinese law is bad, you should know that Korea bans Google map because of law.

[khuey]

China is 91.5% Han. That's not what most people think of as "wide diversity".