Can I be a citizen of Kazakhstan, get a visa to China in Seoul?

Hello, I am a citizen of Kazakhstan, but at the moment I study in Russia in the city of St. Petersburg. I come to Seoul for a student forum, after going to China too on the forum (there is an invitation). But at the Russian consulate I was not given entry permit, saying that citizens of Kazakhstan, should receive it in their country. Such a question can I get one at the Chinese embassy in Seoul?